Choose the set of equations that best represent the following information:

The sum of two numbers, a and b, is 12. The first number, a, is 8 more than the second number.

ab = 12, a + 8 > b
a + b = 12, a = b + 8
a + a = 12, b - 8 = a
a + b = 8, a > b + 12