ABC is a semi circular arc as shown in figure. A charge q0 is placed at the centre O. Charge q0 is taken from the point P to points A, B and C successively, the workdone are WA, WB and WC respectively, then
1
WA = WB = WC
2
WC > WB > WA
3
WC > WA, WB = 0
4
WA = WC < WB