Ms. Sue, thanks for your answer. Is there a rule in grammar that I can use to convince someone that #2 is correct?
Which one is correct:
1. The box contains two slides labeled "A" or "B".
2. The box contains two slides labeled "A" and "B".
Which one is correct:
1. The box contains two slides labeled "A" or "B".
2. The box contains two slides labeled "A" and "B".