An investor seeking relatively low default risk investments combined with some type of favorable tax treatment and inflation protection should consider which of the following?(1) Insured municipal bonds. (2) TIPS. (3) Zero coupon Treasury bonds. (4) Series I savings bonds. (5) Series HH savings bonds.

a. 1, 2 and 3.

b. 1, 2 and 4.

c. 2 and 4.

d. 2, 4 and 5.