Which sentence illustrates the best way to combine sentences 18 and 19?
Select one:
O a. Each of these types claims legions of devoted readers, and
their popularity shows no signs of waning, until a growing
number of literary critics have tired of the stranglehold these
types maintain on the fiction market.
O b. Each of these types claims legions of devoted readers, and
their popularity shows no signs of waning; nevertheless, a
growing number of literary critics have tired of the
stranglehold these types have on the fiction market.
Oc. Each of these types claims legions of devoted readers, and
their popularity shows no signs of waning; therefore, a
growing number of literary critics have tired of the
stranglehold these types maintain on the fiction market.
O d. Each of these types claims legions of devoted readers, and
their popularity shows no signs of waning, because a growing
number of literary critics have tired of the stranglehold these
types maintain on the fiction market.