Which function will find the difference of 15 and 3 and return 12 when the main part of your program has the following line of code?

answer = subtract(15,3)

def Subtract(numA, numB):
return numA - numB

def Subtract(numA, numB):
return numB - numA

def subtract(numA, numB):
return numA - numB

def subtract(numA, numB):
return numB - numA