Solve the following rational inequality for x.
(x²+8x+7) / (x²+x-6) ≤ 0
Select the correct answer below:
a. [-7,-3)∪[-1,2)
b. (-[infinity],-7]∪[-3,-1]∪[2,[infinity])
c. (-[infinity],-7]∪(-3,-1]∪(2,[infinity])
d. [-7,-3]∪[-1,2]
e. (-[infinity],-7)∪[-3,-1)∪[2,[infinity])
f. (-7,-3]∪(-1,2]