The distribution system indicated below is to be protected with over current protection. Identify the locations where essentially directional over current relays will be required considering proper fault discrimination.

A

Br-1, Br-4, Br-8 and Br-7

B

Br-2, Br-3, Br-5 and Br-6

C

Br-2, Br-3 and Br-6

D

Br-1, Br-4, Br-7, Br-5