According to Einstein's General Theory of Relativity,a Clock That Ticks

According to Einstein's general theory of relativity,a clock that ticks at a regular rate far from a source of gravity will appear to tick:

A) at the same rate in a gravitational field if it is an atomic clock but at a slower rate if it is a mechanical clock.
B) at the same rate, wherever it is placed in a gravitational field.
C) slower the closer it comes to the source of gravity.
D) faster the closer it comes to the source of gravity.