If Labour Markets Had Perfectly Flexible Wages,as the Market-Clearing Theories

Multiple Choice

If labour markets had perfectly flexible wages,as the market-clearing theories suggest,involuntary unemployment would

A) not exist.
B) rise when the labour demand curve shifts to the left.
C) rise when the labour demand curve shifts to the right.
D) rise when the labour supply curve shifts to the left.
E) rise when the labour supply curve shifts to the right.