Be careful when you deal with this chemical, as it will explode when ______ to sunlight.

A．exposed

B．to expose

C．exposing

D．being exposed

若将持有至到期投资重分类为可供出售金融资产，重分类日，对持有至到期投资账面价值与公允价值的差额，正确的处理方法是（）。