How is your business _______recently?I haven’t heard from you for three months.

A．getting on

B．getting in

C．getting off

D．getting over

资源税是以开采或生产应税产品的收益为课税对象，以开采或生产应税产品的单位和个人为纳税人的一种税。其作用在于促进资源的合理开发和利用，调节资源级差收入。