If One Could Transport a Simple Pendulum of Constant Length

Multiple Choice

If one could transport a simple pendulum of constant length from the Earth's surface to the Moon's,where the acceleration due to gravity is one-sixth (1/6) that on the Earth,by what factor would the pendulum frequency be changed?

A) about 6.0
B) about 2.5
C) about 0.41
D) about 0.17