Which of the Following Sentences Avoids the Use of Faulty

Which of the following sentences avoids the use of faulty parallelisms?

A) We must either reduce expenses or it will be essential to raise revenues.
B) The dress was old, stained and it was torn.
C) The kids should learn reading and to write.
D) The athletes are training regularly and work hard.
E) Examples of hobbies are reading, fishing and knitting.