SAT Test 2: nonlinear systems of equations - question #4-29

y=3
y=ax^2 + b
In the system of equations above, a and b are
constants. For which of the following values of a
and b does the system of equations have exactly two
real solutions?
A) a = −2, b = 2
B) a = −2, b = 4
C) a = 2, b = 4
D) a = 4, b = 3