The four supply curves shown below (A, B, C, and D) all differ in terms of their price elasticity of supply. A set of 4 line graphs depicts supply curves (marked as A, B, C, and D).In all the graphs, the horizontal axis is labeled quantity and the vertical axis is labeled price. In graph titled supply A, a straight line labeled S A runs parallel to vertical axis. In graph titled supply B, a straight line labeled S B runs parallel to horizontal axis. In graph titled supply C, an increasing line from horizontal axis labeled S C is drawn. In graph titled supply D, an increasing line from vertical axis labeled S D is drawn. a. Looking at Supply A and Supply B, which of these two is perfectly inelastic? multiple choice 1 Supply A Supply B b. Looking at Supply A and Supply B, which of these two is perfectly elastic? multiple choice 2 Supply A Supply B c. All else the same, which supply curve is relatively more elastic: Supply C or Supply D? multiple choice 3 Supply C Supply D d. All else the same, which supply curve is relatively more inelastic: Supply C or