the answer to your qustion is C
Sophocles, Electra and Other Plays, Works of Sophocles, The Complete Sophocles, Two Faces of Oedipus, Sophocles: Selected Fragmentary Plays.
it is true they both went to the university in wittenberg
This sentence is C. compound.
Compound sentences consist of at least two independent clauses, and each clause has to have at least one predicate, or verb. Here, there are two independent clauses: My uncle and I built (the treehouse in our back yard) AND (My uncle and I) painted the tree house in our back yard.
A simple sentence has only one verb; a complex sentences has to have a subordinate clause as well as independent one.
