What was not a motivation for the cunard line to build the lusitania?

a: britain and the cunard line were humiliated when germans had captured the trophy for the fastest transatlantic crossing.

b: british scientists wanted to demonstrate the power of solar engines

c: an american entrepreneurs bought the white star line.

d: one of the cunard lines ships stalled in the middle of the ocean.

(i think the answer is either b or d)