The charges $+ 5 \; \mu C$ and $+ 10 \; \mu C$ are placed $20\; cm$ apart. The electric field at the mid point between the two charges is :

Question

( A ) $13.5 \times 10^6 \; N/C$ directed towards $+10\; \mu C$
( B ) $4.5 \times 10^6 \; N/C$ directed towards $+10\; \mu C$
( C ) $4.5 \times 10^6 \; N/C$ directed towards $+5\; \mu C$
( D ) $13.5 \times 10^6 \; N/C$ directed towards $+5\; \mu C$