$ Minerals from 25 to 30% of the cell contents.
! Lipids form 40 to 50% of the cell contents.

Options

A. If both As and R are correct and R is correct explanation of As
B. If both As and R are correct but R is not correct explanation of As
C. If As is correct, R is wrong
D. If both As and R are wrong.

Answer

To solve the question regarding the composition of cell contents, we will analyze the assertion and reason provided in the question step by step.

### Step 1: Analyze the Assertion
The assertion states that "Minerals form 25 to 30% of the cell contents."

- **Evaluation**:
- The typical composition of a living cell includes a very small percentage of minerals. In reality, minerals constitute about 1% of the cell contents, which is significantly lower than the 25-30% stated in the assertion.

### Step 2: Analyze the Reason
The reason states that "Lipids form 40 to 50% of the cell contents."

- **Evaluation**:
- Similar to the assertion, this statement is also incorrect. Lipids typically account for only about 2% of the cell contents, which is far less than the 40-50% mentioned in the reason.

### Step 3: Conclusion
Both the assertion and the reason are incorrect based on the standard composition of a living cell.

- **Final Answer**: Therefore, the correct option is that both the assertion and reason are wrong.