Answer:
Option: They were all helped and promoted by Caesar.
Step-by-step explanation:
The name mentioned above is all close to Julius Caesar. Trebonius, a military commander, under Julius Caesar dictatorship, he was made legates, and later became a politician served as a suffect consul in 45 BC. Decius escorts Caesar to the Senate, which means he is trusted by Caesar. Brutus is a close friend to Julius Caesar, and Cassius uses Caesar good nature for his selfishness.