8.What is the coefficient of a radical ?
option 1: A constant number in front of a radical symbol that is being added to the radical
option 2: A constant number in front of a radical symbol that is being multiplied by the radical
option 3: A constant number in front of a radical symbol that is being divided by the radical
option 4: A constant number in front of a radical symbol that is being subtracted from the radical
option 5: other: