Which of the Following Is False About Investment Banking

Which of the following is false about investment banking?

A) Reputation is very important in attracting and keeping clients.
B) Investment banks generally have higher financial leverage than commercial banks.
C) Investment banks deal with investing or facilitating investment and financing in different ways including taking firms public and assisting in seasoned offerings and providing research, advice, and expertise.
D) Investment banks in the U.S. are not allowed to operate in the same holding company as an insurance firm or commercial bank.