Assume That Sales Revenues, in Millions, for Continental Divide Mining

Multiple Choice

Assume that sales revenues, in millions, for Continental Divide Mining can be described by , where t is the number of years past 1992. Use the function to find the maximum revenue. Round your answers to three decimal places. ​

A) Maximum revenue is $9.463 million.
B) Maximum revenue is $5.971 million.
C) Maximum revenue is $3.672 million.
D) Maximum revenue is $3.851 million.
E) Maximum revenue is $16.986 million.