If Demand Is Estimated Using the Empirical Specification $\ln Q = \ln a + b \ln P + c \ln M + d \ln P _ { R }$

Multiple Choice

If demand is estimated using the empirical specification $\ln Q = \ln a + b \ln P + c \ln M + d \ln P _ { R }$ ,then an equivalent expression for demand is

A) $\ln Q = a + b P + c M + d P _ { R }$ .
B) $Q = a + b P + c M + d P _ { R }$ .
C) $Q = e ^ { a } + b P + c M + d P _ { R }$ .
D) $Q = a b P c M d P _ { R }$ .
E) none of the above