Underwriting New Securities Issuance Requires That the Investment Bank

Underwriting new securities issuance requires that the investment bank

A) buys the issue at a certain price and then sells it in the primary market.
B) provides research and legal advice only to the issuing company.
C) buys the issue at a certain price and then sells it in the secondary market.
D) provides its best effort to sell the securities,the unsold portion goes back to the issuer.
E) purchases securities in the secondary market when they are undervalued.