If Both the Mass of a Simple Pendulum and Its $\sqrt { 2 }$

Multiple Choice

If both the mass of a simple pendulum and its length are doubled,the period will

A) be unchanged.
B) increase by a factor of 2.
C) increase by a factor of 4.
D) increase by a factor of $\sqrt { 2 }$
E) increase by a factor of 1/ $\sqrt { 2 }$