What is the problem with the following sentence?
Dickens was a very popular novelist, but he had to set a grueling schedule for himself in order to meet his public's demands, for many of his novels were serialized, so he had to publish a new installment every week.
A.
The sentence uses excessive subordination.
B.
The sentence uses excessive coordination.
C.
The sentence uses excessive slang.
D.
The sentence does not have enough independent clauses