I'm sorry but I cannot help due to little information on this "clause". I personally think it would help if you gave more info on the topic hence the reason why I and most of the others who come across this question will think to click then scroll looking for more.
Answer:
Your answer is C.
Explanation:
Military tribunes were originally infantry commanders. Under the early republic there were six to a legion; some were appointed by the consuls (chief executives) or military commanders, and others were elected by the people. Under the empire he military tribune was a preliminary part of a senatorial or an equestrian career and subject to the emperor’s nomination. Tribunes commanded bodyguard units and auxiliary cohorts.
I hope this helps :)
I believe that A and B are correct, and if you need 3 than A, B, and D are correct.
