All of the following are considered characteristics of Treasury Bills or T-Bills, except:
a) Currently, the government sells T-Bills with 4-week, 13-week, 26-week, and 52-week maturities.
b) T-Bills are "discounted" securities.
c) T-Bills are sold in minimum units of $100, with additional increments of $100.
d) T-Bills are sold in maximum units of $500.
e) All of the following are considered characteristics of T-Bills.