Translate the following sentence from Chinese into English. “从概念上讲,当企业从事增加商品或劳务的价值(经济学上称为效用)的活动时,企业就是在创造收入。”
A、At conceptual level, a firm earns revenue as it engages in activities that increase the value (or utility, in economic terms) of an item or service.
B、Revenue as it engages in activities that increase the value (or utility, in economic terms) of an item or service.
C、At level, a firm earns revenue as it engages in activities that increase the value (or utility, in economic terms) of an item or service.
D、None of the above.