Good Afternoon!

Can you explain this question to me?

If the elasticity of demand for the latest American Idol album is 1.4, this means

A) a 10percent decrease in the price leads to a 140percent increase in quantity demanded.

B) few substitutes for the American Idol album exist.

C) a 5percent increase in the price leads to a 7percent decrease in quantity demanded.

D) a 1 percent increase in the price leads to a 14percent decrease in quantity demanded.