Suppose You and a Friend Have Very Precise Clocks

Multiple Choice

Suppose you and a friend have very precise clocks.You are on the ground floor of a tall building and your friend is on the roof.Which of the following statements is true?

A) You will see your friend's clock ticking faster than yours,and she will see your clock ticking faster than hers.
B) You will see your friend's clock ticking slower than yours,and she will see your clock ticking slower than hers.
C) You will see your friend's clock ticking faster than yours,and she will see your clock ticking slower than hers.
D) You will see your friend's clock ticking slower than yours,and she will see your clock ticking faster than hers.