Which of the following are true and which are false:

A Treasury bill is a short-term pure-discount security issued by the government with up to six months to maturity.

An investor buying a security on margin borrows part of the cost of the security from a broker and immediately sells the security in the open market.

Holding other factors constant, the duration of a zero-coupon bond is higher when the bonds yield to maturity is lower.

The New York Stock Exchange is the worlds largest dealer market.