Three concurrent coplanar forces `1 N, 2 N and 3 N` are acting along different directions on a body can keep the body in equilibrium, if
Options:
(a) `2 N and 3 N` act at right angle
(b) `1 N and 2 N` act at acute angle
(c) `1 N and 2 N` act at right angle
(d) Cannot be possible