Here's a problem to solve: As part of an experiment, an astronaut takes a scale to the Moon and weighs himself. The scale reads 31 pounds. If the astronaut has a mass of about 84 kilograms, which are the approximate weight and mass of the astronaut when standing on the Earth?

Among the 4 following options, which is the correct answer?

- A: 31 pounds and 14 kilograms
 
- B: 31 pounds and 84 kilograms
 
- C: 186 pounds and 14 kilograms
 
- D: 186 pounds and 84 kilograms
 