SMART目标指的是什么（）

题目：SMART目标指的是什么（）

A．Specific，Measurable, Attainable, Reasonable, Time-based
B．Smart，Measurable, Advanced, Relevant, Time-based
C．Smart，Measurable, Attainable, Reasonable, Time-based
D．Specific，Measurable, Attainable, Relevant, Time-based