“只要人人都献出一点爱，世界将变成美好的人间”。这句歌词主要说明[ ]

A．基于血缘关系的爱是人间最真挚最纯洁的爱

B．爱就是想方设法满足他人的要求

C．爱是无私的，不需要任何回报

D．爱是双向的、互动的，有利于人与人之间和谐相处

Costs included in the determination of a company’s economic profit that are also most likely to be included in that company’s accounting costs are:（）

A. explicit costs.

B. economic depreciation and foregone interest.

C. opportunity costs associated with labor provided by the company’s owners.