With a Rise in the Price of Digitally Streamed Music

Multiple Choice

With a rise in the price of digitally streamed music from $0.50 to $1.00 per song,the number of songs bought falls from 3 million to 1 million.Hence the numerical value of the price of elasticity of demand for this product is:

A) 1.50
B) 4.00
C) 2.00
D) 1.33
E) 0.67