Identify the correct sentence. A. Randall​ added, When I said I would come home for the​ holidays, my mother​ said, I’m so happy to hear that. B. Randall​ added, When I said I would come home for the​ holidays, my mother​ said, 'I’m so happy to hear ​that.' C. Randall​ added, When I said I would come home for the​ holidays, my mother​ said, I’m so happy to hear that. D. Randall​ added, 'When I said I would come home for the​ holidays, my mother​ said, 'I’m so happy to hear​ that.'