The Hilton Hotel Chain Serves Both Business and Vacation Travelers $D _ { \text {Business } }$

Multiple Choice

The Hilton Hotel chain serves both business and vacation travelers. $D _ { \text {Business } }$ and $M R _ { \text {Business } }$ represent the demand and marginal revenue for business travelers,while $D _ { \text {vacation } }$ and $M P _ { \text {Vacation } }$ are the demand and marginal revenue for vacation travelers.If marginal cost decreases to the point that total marginal revenue (MR_T is not shown in the figure) for Hilton at the profit-maximizing level of total output is $40,what price should the Hilton charge BUSINESS travelers?

A) $60
B) $80
C) $100
D) $120
E) $140