If the HCF of polynomials
`f(x) = (x - 1)(x^(2) + 3x + a)` and
`g(x) = (x + 2) (x^(2) + 2x + b)` is `(x^(2) + x - 2)`,
then what are the values of a and b respectively?

Options

A. 2,2
B. 2, -3
C. `- 1,-3`
D. `-2,- 1`