The share of junk-bond issuers in the corporate-bond market had risen from a low of 28% in 1992. Most of the increase in junk issuance was in the B category. The increase reflects the expansion of...

The share of junk-bond issuers in the corporate-bond market had risen from a low of 28% in 1992. Most of the increase in junk issuance was in the B category. The increase reflects the expansion of capital markets to embrace more marginal firms, a. What is the interpretation of an increase in junk-bond issuance and of the last sentence statement?