在订立保险合同时，保险人应向投保人说明保险合同的条款内容，保险人所履行的义务是( )。

A．解释条款的义务
B．签发保单的义务
C．说明合同内容的义务
D．如实告知的义务

Which of the following statements is a key characteristic of Global Investment Performance Standards (GIPS) （）

A. GIPS require managers to include all actual fee - paying and non - fee - paying discretionary portfolios in composites defined according to similar strategy and/or investment objective.

B. GIPS require firms to show GIPS - compliant history for a minimum of ten years, or since inception of the firm or composite if in existence less than ten years.

C. GIPS exist as a minimum worldwide standard where local or country - specific law, regulation, or industry standards may not exist for investment performance measurement and/or presentation.