Question

for 2x^5-5x^3+12=0,state the number of complex roots, the possible number of real roots, and the possible rational roots.
A) 2 complex roots;1,3,or 5 real roots
possible rational roots:+- 1/2, +-1, +-2, +-3/2,+-3,+-4, +-6,+-12
B) 1 complex root; 1,3,or 5 real roots
possible rational roots:+- 1/2, +-1, +-2, +-3/2,+-3,+-4, +-6,+-12
C) 3 complex roots;1,3,or 5 real roots
possible rational roots:+- 1/2, +-1, +-2, +-3/2,+-3,+-4, +-6,+-12
D) 5 complex roots; 1,3,or 5 real roots
possible rational roots:+- 1/2, +-1, +-2, +-3/2,+-3,+-4, +-6,+-12