The Figure Below Represents a String Which Has a Heavy $\frac { 1 } { 16 }$

Multiple Choice

The figure below represents a string which has a heavy section and a light section.The mass per unit length of the heavy section is 16 times as large as the mass per unit length of the light section.When the string is under tension,the speed of a pulse traveling in the heavy section is ____ times the speed of that same pulse traveling in the light section.

A) $\frac { 1 } { 16 }$
B) $\frac { 1 } { 4 }$
C) $\frac { 1 } { 2 }$
D) 2
E) 4