Hi, experts. Please share your thoughts. Appreciated

Independent contractors pay higher taxes and paid less consistently than are statutory employees, but they, unlike statutory employees, are freely allowed to perform the same type of work for multiple businesses.
(A)taxes and paid less consistently than are statutory employees, but they, unlike statutory employees, are freely allowed to

(B)taxes and are paid less consistently than statutory employees; unlike statutory employees, though, independent contractors are free to

(C)taxes, are paid less consistently than statutory employees, and, unlike statutory employees, they may freely

(D)taxes and are paid less consistently than are statutory employees; in addition, unlike statutory employees, independent contractors can freely

(E)taxes and paid less consistently than are statutory employees; moreover, unlike statutory employees, they are allowed to

OA:B

My question is (B)taxes and are paid less consistently than statutory employees; unlike statutory employees, though, independent contractors are free to

"are paid less consistently than statutory employees " how is it be parallel?

Please explain. Million thanks in advance.