Factor the trinomial below: 4x^2 - 19x - 5. Which two binomials are factors of the trinomial?
a. (x - 5) and (4x + 1)
b. (4x - 1) and (x + 5)
c. (x + 5) and (2x - 1)
d. (2x + 5) and (x - 1)