Use the given scale factor and the side lengths of the scale drawing to determine the side lengths of the real object. Scale factor: 3:1 6 in b a 15 in Scale drawing Object A. Side a is 5 inches long and side bis 2 inches long. B. Side a is 12 inches long and side bis 4 inches long. O C. Side a is 12 inches long and side bis 3 inches long. O D. Side a is 45 inches long and side bis 18 inches long. GIVING BRAINLIEST!!​