For the function \(f(x) = -2x^2 + 10x + 3\),
a. The function has a minimum value. The minimum value of the function is -34.5.
b. The function has a maximum value. The maximum value of the function is 15.5.
c. The function has a maximum value. The maximum value of the function is -34.5.
d. The function has a minimum value. The minimum value of the function is 15.5.