Which one of the following statements about mass and weight is correct?
a) Mass is a scalar that depends on the local value of g, while weight is a vector that remains constant everywhere.
b) Both mass and weight are scalar quantities; however, weight varies from place to place.
c) Mass is a scalar that remains constant everywhere, while weight is a vector that depends on the local value of g.
d) Mass is a vector because it acts toward the centre of the Earth, whereas weight is a scalar and remains the same everywhere.