Which command returns the product of two columns returned in a column named ProdC1C2?

A. SELECT Col1 * Col2 AS ProdC1C2
B. SELECT AS ProdC1C2 Col1 x Col2
C. SELECT FROM Col1 * Col2 TOTAL ProdC1C2
D. SELECT (Col1, Col2) PRODUCT ProdC1C2

Answer: A