Inflation was a problem during the Great Depression

We should never assume that an inelastic demand curve is a perfectly inelastic demand curve because

A) perfectly inelastic demand curves are rare. B) an inelastic demand curve may be perfectly inelastic at some times but not others. C) an inelastic demand curve may be elastic at low prices. D) there has never been evidence of a perfectly inelastic demand curve.

If the price index in year A is 130, this means that:

A.  Prices in year A are on average 130 percent higher than in the base year B.  Prices in year A are on average13 times that in the base year C.  Prices in year A are on average 30 percent higher than in the base year D.  Nominal GDP is 130 percent higher than real GDP in year A