Oprah makes $159.00 per day plus an additional 6% commission on her sales. Which equation could be used to find how much Oprah made in one day, r, if she sold x dollars worth?
A.0.06x + $159.00 = r

B.0.06x - $159.00 = r

C.6x + $159.00 = r

D.159x - $6.00 = r