My mother asked me to prepare dinner for my brothers and sister. she asked me as she was leaving. what is the best way to combine the two sentences? a) my mother asked me to prepare dinner for my brothers and sister who was leaving. b) my mother, who was leaving, asked me to prepare dinner for my brothers and sister. c) my mother asked me to prepare dinner as she was leaving for my brothers and sister. d) my mother asked me to prepare dinner for my brothers and sister and she was leaving.