Matrix Match

1→ b,c
2→ b
3→ b
4→ a,b,d

1 -> b,c

2 -> a,d

Yaar wiki mein toh diya hai cyclobutane exists in puckered or butterfly conformation?

i think 1-c 2-d 3 - b 4 -a

chinkoos...everyone knows matrix match is always multichoice. How is this single choice? Have you ever seen a JEE matrix match which is single choice?