A Space Barge Pushes on a Spaceship with a Rest

Multiple Choice

A space barge pushes on a spaceship with a rest mass of 15,000 kg and accelerates it from a speed of 0.600c to a speed of 0.700c.How much work does the barge have to do to accomplish this? (c = 3.00 × 10⁸ m/s)

A) 1.35 × 10²⁰ J
B) 2.03 × 10²⁰ J
C) 2.70 × 10²⁰ J
D) 5.42 × 10²⁰ J
E) 8.78 × 10¹⁹ J