I don't know ______. [ ]

A. how old he is

B. when will he leave

C. where does he come from

虽然物业管理企业认为业主和业主委员会未认真履行合同中载明的义务，以至于难以继续履行合同.但这不能成为物业管理企业申请提前解聘的理由。