RMB equity investment fund refers to an equity investment fund established in China according to the laws of China, which mainly invests in non-publicly traded equity in China with RMB. (item d error)

RMB equity investment funds can be divided into domestic RMB equity investment funds and overseas RMB equity investment funds.

Domestic RMB equity investment fund refers to an equity investment fund initiated and established in China by a natural person of China nationality or a company, enterprise or other economic organization legally registered in China, which mainly invests in domestic private equity transactions in RMB.

Foreign-funded RMB equity investment funds refer to equity investment funds initiated and established in China by foreign investors (foreign investors refer to foreign companies, enterprises and other economic organizations or individuals) or foreign investors and companies, enterprises or other economic organizations incorporated in accordance with the laws of China, which mainly invest in RMB in non-publicly traded equity in China. (Item A is correct)

Foreign currency equity investment fund refers to an equity investment fund established outside China according to relevant laws and mainly invested in enterprises in China with foreign currency. (item c is correct)

Foreign currency equity investment funds usually adopt a "double-headed" approach. (item b is correct)