Suppose the Demand for Fabric Softener Can Be Described as Q^D

Multiple Choice

Suppose the demand for fabric softener can be described as Q^D = 800 - P - P_D, where Q^D is the quantity of fabric softener demanded, P is the price of fabric softener, and P_D is the price of laundry detergent. Suppose that the price of detergent is initially 10 but increases to 15. The new equation for the demand of fabric softener is:

A) 785 - P, and demand has shifted to the left.
B) 785 - P, and demand has shifted to the right.
C) 815 - P, and demand has shifted to the left.
D) 815 - P, and demand has shifted to the right.