Which of the following represents the set of possible rational roots for the polynomial shown below? 2x³+5x²-8x-10=0 A {(1/2), 1, 2, (5/2), 4, 5, 10, 20} B {+-1, +-2, +-4, +-5, +-10, +-20} C {+-(1/2), +-1, +-2, +-(5/2), +-5, +-10} D {+-(2/5), +-(1/2), +-1, +-2, +-(2/5), +-(1/5), +-(1/10)}