If $|\overrightarrow{A}+\overrightarrow{B}| = |\overrightarrow{A} | = |\overrightarrow{B}|$ then angle between A and B will be :-

Question

( A ) $120^{\circ}$
( B ) $90^{\circ}$
( C ) $60^{\circ}$
( D ) $0^{\circ}$