The CFA soft dollar standards present a three$-$level analysis framework to help the investment manager to determine if they could use client brokerage to obtain certain product or service. According to this three$-$level analysis framework, which of the following product or service could be paid for using client brokerage?

Select one or more: ABC

a$.$ A product or service that the investment manager is comfortable disclosing and explaining the decision in a face$-$to$-$face meeting with the client.

b$.$ A product or service that is used to directly assist the investment manager in developing

proprietary products for their employer.

c$.$ A product or service that is used to directly assist the investment manager in making investment decisions for the client.