Question: The rover Spirit is a robotic probe that NASA has placed on Mars. The gravitational attraction of Mars is approximately 62% less than that of Earth. Compared to its measurements on Earth, on Mars the probe has

  Options: 
 A. the same weight and the same mass.
 B. a larger weight, but smaller mass.
 C. a smaller mass and larger weight.
 D. a smaller weight and the same mass.
Answer: D