A diwali cracker of mass 60 g at rest, explodes into three pieces A,B and C of mass 10 g, 20 g and 30 g respectively. After explosion velocities of A  and B are 30 m/s along east and 20 m/s along north respectively. The instantanous velocity of C will be ?

1. 20/3 m/s , 37 ⁰ South of West
2. 50/3 m/s ,37⁰ South of East
3. 50/3 m/s, 53⁰ South of West
4. 20/3 m/s, 53⁰ South of East