Rima used 3 of these 4 sticks to form a triangle with their ends touching each other.

Which of these could be the 3 sticks?
A. sticks P,Q and R
B.sticks P,Q and S
C. sticks P,R and S 
d. sticks Q,R and S

CAN SOMEONE REPLY WHAT THE CORRECT ANS IS WITH EXPLAINATION