Six friends went to a Cyber Cafe. They are to be accommodated in a row of nine rooms, each to a room. A, E and F do not want to be in a room at the end of the row. B and A must not have anybody adjacent to their rooms, There is only an empty room between A and F. C is adjacent to both G and F. E is next to the room at the beginning.
Who is in the third room?

Options

A. G
B. C
C. No body
D. F

Explanation

To solve the problem, let's break down the information given step by step and arrange the friends in the rooms according to the constraints provided.

### Step 1: Understand the constraints
1. **Rooms**: There are 9 rooms in a row.
2. **Friends**: 6 friends (A, B, C, E, F, G) need to be accommodated.
3. **Constraints**:
- A, E, and F do not want to be in rooms 1 or 9 (the ends).
- B and A must not have anyone adjacent to their rooms.
- There is only one empty room between A and F.
- C is adjacent to both G and F.
- E is next to the room at the beginning (room 1).

### Step 2: Place E
Since E is next to the room at the beginning, E can only be in room 2 (because E cannot be in room 1).

```
Room: 1 2 3 4 5 6 7 8 9
[ ] [E] [ ] [ ] [ ] [ ] [ ] [ ] [ ]
```

### Step 3: Place A and F
A and F cannot be in rooms 1 or 9. Since there is only one empty room between A and F, the possible placements for A and F could be:
- A in room 4 and F in room 6
- A in room 5 and F in room 7

However, A and B must not have anyone adjacent to them. Therefore, if we place A in room 4, B cannot be in room 3 or 5. This means B must go in room 1 or 9, which is not allowed because A, E, and F cannot be in room 9.

So, let's try placing A in room 5 and F in room 7:
```
Room: 1 2 3 4 5 6 7 8 9
[ ] [E] [ ] [ ] [A] [ ] [F] [ ] [ ]
```

### Step 4: Place B
Since A is in room 5, B cannot be in room 4 or 6. Therefore, B must be in room 1:
```
Room: 1 2 3 4 5 6 7 8 9
[B] [E] [ ] [ ] [A] [ ] [F] [ ] [ ]
```

### Step 5: Place C and G
C must be adjacent to both G and F. Since F is in room 7, C must be in room 8, and G must be in room 6:
```
Room: 1 2 3 4 5 6 7 8 9
[B] [E] [ ] [ ] [A] [G] [F] [C] [ ]
```

### Step 6: Fill in the remaining room
The only room left is room 3, which must be filled by the remaining friend, which is D (not mentioned in the constraints but assumed to be the sixth friend).

```
Room: 1 2 3 4 5 6 7 8 9
[B] [E] [D] [ ] [A] [G] [F] [C] [ ]
```

### Conclusion
Now, we can answer the question: **Who is in the third room?**
The answer is **D**.