Here's a problem to solve: The weight of an object can change even when the mass stays the same. Which statement correctly identifies a relationship between mass and weight?

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

- A: The weight of an object depends on its mass and its volume.
 
- B: Gravity affects the weight of an object but not its mass.
 
- C: The mass of an object depends on its weight and size.
 
- D: Magnetic fields can affect mass but not weight.
 