New York City SHSAT 2017

51. If ℓ 1 is parallel to ℓ 2 in the figure above, which of the following expressions must equal 180?

I. a + b

II. c + e

III. c + d + e

(A) I only

(B) II only

(C) III only

(D) II and III only

(E) I, II, and III