ANobody must expect to become rich, he works hard
BNobody must expect to rich and he works hard
CNobody must expect to become rich, unless he works hard
DNone of these
Complex sentence contains one main clause and one or more subordinate clause .
Nobody must expect to become rich - Main clause
unless he works hard - Subordinate clause.
Convert the simple sentence into complex sentence by using adverb clause. All being well, I shall meet her parents today.