5.  Two boys A and B are sitting at two points in a field.  Both boys are sitting near assemblage of charged balls each carrying charge +3e.  A throws 100 balls per second towards B while B throws 50 balls per second towards A.  Simultaneously find the current at the mid-point of A and B.
$$\begin{gathered} a) i=3.4\times {10}^{-17 }A from A to B \\ b) i=2.4\times {10}^{-17} A from A to B \\ c) i=3.4\times {10}^{-17} A from B to A \\ d) None of the above \end{gathered}$$