Answer:
The correct answer is B) False
Explanation:
In theatrical production the costumes are a very important part of the play. The design of the costumes should help reflect a characters personality, time frame, status, and so many other visual aspects that important to transmit the intention of the play. That is why it's so important for costume designers to work with the directors of the play, so they can agree and understand the work that is being intended, the message that the director is trying to give.
Accessories are a big part of costume designing, such as; hats, suitcases, canes, books, jewelry, etc. All these details are important to tell a story about the character or an action that will be taking place, so its important for the actors to get familiar with them during rehearsal even though the dress rehearsal didn't occur yet.
It can be a tricky question though, because it doesn't necessarily have to be the final accessory that is going to be use at the dress rehearsal, but there should be props similar to the accessories that are planned to be use with a certain costume.
For example if a character is to wear a hat it is important to rehearse with a similar hat to the one that he will use to see if it is appropriate in terms of lighting or a change in costume should be made. If a character is to use a cane or book and that accessory takes part on the play, it is important for the actors to contemplate this and be able to practice with such props.