For boys who no longer have fathers there is an organization____ Big BrothersA.callingB.called应选哪一个,请问这是一个什么结构?

For boys who no longer have fathers there is an organization____ Big Brothers
A.calling
B.called
应选哪一个,请问这是一个什么结构?

的确是B,“被称为”的意思,过去分词表被动

B

B,补足语