He wasn't asked to take on the chairmanship of the society,_

He wasn't asked to take on the chairmanship of the society,____insufficently popular with all members.
A being considered B considered C to be considered D having been considered
这道题困扰小弟很长时间了,请回答详细些,
请教maryswallow：在教材上看到一个句子，Considered as a building material,wood is not very strong.此处教材上认为是过去分词表示让步。我总认为此处用Being considered 较好（被动语态），