Scenario 4.5: The Demand Curve for Grilled Cheese Sandwiches Has Been Estimated

Multiple Choice

Scenario 4.5:
The demand curve for grilled cheese sandwiches has been estimated using statistical techniques as follows:
log(Q) = -1.10 - 0.18 log(P) + 1.21 log(I) + 0.84 log(Ph)
where Q is the quantity of grilled cheese sandwiches
P is the price of grilled cheese sandwiches
I is income
Ph is the price of hamburgers
-See Scenario 4.5. If P = $1,000, the price elasticity of demand:

A) is 0,
B) is negative infinity.
C) is -0.18.
D) cannot be determined without knowing I and Ph.