Sofa Specialist, Deepseat, Estimates Its Demand Function and Thinks That

Multiple Choice

Sofa specialist, Deepseat, estimates its demand function and thinks that the demand for its sofas depends on the sofa's price Pd, the price of sofas sold by Furniture4Us Pf, the volume of carpet sales V and consumer income Y. Which of the following would you expect to be the estimated demand function?

A) Qd = a - bPd - cPf + dV - eY
B) Qd = a - bPd + cPf + dV + eY
C) Qd = a + bPd + cPf - dV - eY
D) Qd = a + bPd - cPf + dV + eY