Time varying magnetic filed is present in a circular region of radius R. Match the proper entries from column-2 to column-1 using the codes given below the columns,
`{:("Column I",,"Column II"),("(P) An unsteady magnetic field",,"(1) Electric field is perpendicular to the length of rod "),((Q) "Induced electric field at a point within magnetic field (r gtR)",,(2) r/2 (dB)/(dt)),("(R)Induced electric field at a point out side the magnetic field (r lt R)",,(3)(R^(2))/(2r)(dB)/(dt)),((S)"If a rod is placed along the diameter of the magnetic field",,"(4) induced electric field"):}`

Options

A. `{:(,P,Q,R,S),((A),3,2,1,4):}`
B. `{:(,P,Q,R,S),((B),2,1,3,4):}`
C. `{:(,P,Q,R,S),((C),4,2,1,3):}`
D. `{:(,P,Q,R,S),((D),4,2,3,1):}`

Explanation

To solve the problem, we need to match the entries from Column I with the correct entries from Column II based on the principles of electromagnetism, particularly the behavior of electric fields in the presence of a time-varying magnetic field.

### Step-by-Step Solution:

1. **Identify the entries in Column I and Column II:**
- Column I:
- (P) An unsteady magnetic field
- (Q) Induced electric field at a point within magnetic field (r > R)
...