How did Justinian gain the throne?

Question

anonymous · Answer

His father passed on the throne to him.
His uncle made him co-emperor.
His army took control of Constantinople.
His wife was of royal birth.

anonymous · Answer

Was it his army?

anonymous · Answer

I believe his army gained him the throne, as the Nika riots tried to take the throne several times.

anonymous · Answer

im  not  sure  what  the  answer  is  but  its  not  his  army  i  just  took  a  quiz  on  it

anonymous · Answer

Don't know what the right answer is but it's NOT (A) or (His father passed on the throne to him.)

anonymous · Answer

his uncle made him co-emperor.

 "In 527, Justinian I became the ruler of the Byzantine Empire. However, he was not the son of the 
preceding ruler. In fact, Justinian was born to peasant parents in 482. In the Byzantine Empire, imperial succession was not hereditary. Most emperors chose a son as the heir to the throne. However, others picked a relative who seemed qualified for the position."