The Most Conservative Investments Are Government Savings Bonds and Bank

The most conservative investments are government savings bonds and bank GICs. In decreasing order of conservativeness, the next two investments are

A) medium-quality preferred stock and high-grade corporate bonds.
B) commercial paper and lower-quality common stocks.
C) high-grade corporate bonds and commercial paper.
D) commercial paper and medium-quality preferred stocks.
E) junk bonds and high-grade corporate bonds.