to hint that Brutus had more insidious intentions for Caesar
Option C.
Step-by-step explanation:
Brutus was adopted by Ceaser's uncle. Though he considered Brutus to be his true friend and conisedered him to be very close to Brutus but the reality was Brutus was not a true friend of Ceaser.
Rather Brutus had the intentions to kill Ceaser and he wanted to murder him. Brutus was one among the group of Romans who had murdered Ceaser by stabbing him.