17-19 please

17) One characteristic of a closed-end investment company is that a) the shares of the company are always traded at their net asset value (NAV). b) the company itself will buy back (redeem) its outstanding shares. c) the company makes a continuous offering of new shares to the public. d) the company's shares are listed on national stock exchanges, such as the NYSE. A regulated investment company in which investors actually buy their shares from, and sell them back to, the mutual fund itself is known as a) a closed-end investment company. b) an open-end investment company. c) a loaded investment company. d) a 12(b)-1 investment company. 18) A type of investment vehicle which consists of an unmanaged portfolio of securities put together by a sponsor, has a finite life, and which is then sold to individual investors, is known as a) an aggressive growth fund. 19) b) a sector fund. c) a 12(b)-1 fund. d) a unit investment trust