Plll halp ! a large ship is built with 87 rooms on each level. the ship has 4 levels. which pair of expressions shows two ways to determine the total number of rooms on the ship? a) 80 × 4 and 80 × 7 b) 87 × 4 and 80 × 4 c) (87 × 4) + (7 × 4) and 4 + 4 + 4 + 4 d) (80 × 4) + (7 × 4) and 87 + 87 + 87 + 87 thx