Under their current business model, bond-rating agencies earn their income by Select one: O a. selling manuals containing financial data, as well as financial advisory services, to the purchasers of bonds O b. charging fees to only the buyers of bonds for their bond ratings O c. charging fees to only the issuers of bonds for their bond ratings. O d. charging fees to both the issuers and buyers for their bond ratings. ABC Manufacturing Corporation has a AA bond rating according to Standard & Poor. This means that ABC's bonds are rated Select one: a. highest quality b. high quality c. upper medium quality d. medium quality