A Periodic Transverse Wave Is Established on a String Such

Multiple Choice

A periodic transverse wave is established on a string such that there are exactly two cycles traveling along a 3.0-m section of the string. The crests move at 20.0 m/s.
-How could the speed of the wave be increased?

A) by increasing the period
B) by decreasing the amplitude
C) by decreasing the frequency
D) by increasing the tension in the string
E) by increasing amplitude