Bethany and Stephane produce rival brands of cola. So far, consumers regard the two brands as perfect substitutes. If Bethany adds just a hint of lemon to her cola, what will happen to the Market? a ) Bethany's price elasticity of demand is likely to become inelastic. b) Bethany's price elasticity of demand (in absolute value) will increase , c) Bethany's price elasticity of demand (in absolute value) will go from 0 to some positive number (but not to -o) . d) Bethany sacrifices her price-setting power by adding the lemon . e) Bethany will gain price-setting power