Which answer describes the calculations that could be used to solve this problem? Marcela paid a total of $60.63 for 3 sweaters and a skirt. Each sweater cost the same amount. The skirt cost $18.78. How much did one sweater cost? A. Add $60.63 to $18.78. Then divide by 3. B. Subtract $18.78 from $60.63. Then divide by 3. C. Multiply $60.63 by 3. Then add $18.78. D. Divide $60.63 by 3. Then subtract $18.78.