Established by the U$.$S$.$ Energy Policy Conservation Act of $1975,$ of a manufacturer's fleet of passenger cars or light trucks. $q,$ is the sales$-$weighted average fuel economy, expressed in miles per gallon $($mpg$),$

Select one:

a$.$ corporate average fuel economy $($CAFE$)$

b$.$ mean fuel economy $($MFE$)$

c$.$ adjusted average fuel economy $($AAFE$)$

d$.$ graduated fuel efficiency $($GFE$)$