Jenny and Rosa ... pupils. A) is B) are C) can D) ha

Jenny and Rosa are pupils. We used the verb to be in plural because the subject is in plural. Otherwise, we use the verb to be in singular. (Rosa is a pupil. She is a student). In other words, a singular subject requires a singular predicate, plural subject requires plural predicate. More examples: They are very careful drivers. She is a very attentive. Steve and Rob are good workers. Olga is a day care nurse. They are very famous bloggers with many followers. She is a very promising researcher.