In Python, if var1 = “Happy” and var2= “Birthday” and var3 = (var1+var2) *2, then var3 stores the string

A)“Happy BirthdayHappyBirthday”
B)“HappyHappyBirthday”
C)“HappyBirthdayHappyBirthdayHappyBirthday”
D)“HappyBirthdayBirthday”