A rocket with a single engine is used to carry a small satellite into space. However, now designers want to use a design with a heavier payload to include astronauts and a bigger satellite. Besides using an engine that can carry more fuel, what could they do?

A. They could use an engine with a greater specific impulse.
B. They could use an engine with greater engine specs.
C. They could use an engine with greater rocket stages.
D. They could use an engine with a greater trajectory.