Which sentence has a parallel structure?  A. Apart from dabbling in playwriting, he has tried to create a great civilizational novel, and he tried composing a long, tragic epic.  B. Apart from dabbling in playwriting, he has tried creating a great civilizational novel and composing a long, tragic epic.  C. Apart from dabbling in playwriting, he has tried creating a great civilizational novel and to compose a long, tragic epic.  D. Apart from dabbling in playwriting, he has tried creating a great civilizational novel and has tried to compose a long, tragic epic.