Let R = t] he a function that gives the total revenue of a rm [in millions of dollars} during the the current scal vear, where t is the time in months since the start of the vear. Choose the statement that correctly describes the function %. Do we expect % to he positiver or negative? ii? is the total revenue for the scal year. The units of % are millions of dollars. $ is always positive. as was - \"a is the rate the total revenue is changing with respect to time. The units of g are millions of dollars per month. % is never negative. it: as is the average rate of change of revenue over the scal vear. The units of g are millions of dollars per month. % is never negative. if % is the month where the rm has its maximum revenue. The units of % are millions of dollars. $ is positive. I'di % is the rate the total revenue is changing with respect to time. The units of g are millions of dollars per vear. % could be either positive or negative