The diagrams below show regions of equipotential. 
       
A positive charge is moved from \(\mathrm{A}\) to \(\mathrm{B}\) in each diagram. Choose the correct statement from the options given below:
| 1. | in all four cases, the work done is the same. | 
| 2. | minimum work is required to move \(q\) in figure (a). | 
| 3. | maximum work is required to move \(q\) in figure (b). | 
| 4. | maximum work is required to move \(q\) in figure (c). |