Suppose that the absolute value of the price elasticity of demand for firms A, B, C, and D is 0,0.8,1, and 1.5 respectively. An increase in the price would reduce quantity demanded for
A- Firms A,B,C, and D
B- Firms B,C, and D only
C- Only firm A
D-Firms C, and D only
E- only Firm D