Suppose the CPI (Consumer Price Index) with Respect to Some

Multiple Choice

Suppose the CPI (Consumer Price Index) with respect to some unknown base period was 89 in 1985, 115 in 1990, and 127 in 1993. The CPI rose steadily during this period. The base period used

A) must have been between 1985 and 1990.
B) must have been between 1990 and 1993.
C) must have been after 1993.
D) is 1982-84, as usual.
E) Can't tell from the information given.