PLEASE HELP rehearse v.
1) to recite out loud in a formal manner
2) to present an account of RELATE
3) to list out ENUMERATE
4a) to give a rehearsal of b) to train or make proficient by rehearsal

What is the correct meaning of the word rehearse in the sentence below?

When Barry saw his friends at school on Monday, he rehearsed what had happened during his weekend camping trip.
А. definition 4
B. definition 1
C. definition 3
D. definition 2​