A,B,C & D Sent Armed with Guns to the House

Multiple Choice

A,B,C & D sent armed with guns to the house of K to commit robber. K being absent D with minor son of K went to the field where K was working . C stood a guard outside the house. A & B in the meanwhile shot dead two sons of K.

A) D is guilty of murder as well as robbery.
B) D is not guilty of any offence.
C) D is guilty of Robbery.
D) D is guilty of kidnapping.