PQRS is a trapezium with PQ parallel to RS.

Which of the following can be concluded based on this?

I) ∠1 = ∠4

II) ∠2 = ∠3

III) ∠1 + ∠2 + ∠6 = 180^o

IV) ∠3 + ∠4 + ∠6 = 180^o



 

•        A only I                              B  only I and III
•  C   only I, II and III          D  all - I, II, III and IV