Complete the following statement : Demand curve is parallel to 'X' axis in case of ______.
Q.1 (C) (iii) Complete the following statement : Demand curve is parallel to 'X' axis in case of ______.
A. (a) Perfectly elastic demand
B. (b) Perfectly inelastic demand
C. (c) Relatively elastic demand
D. (d) Relatively inelastic demand