Consider the following yields to maturity on various one-year zero-coupon securities:

Security	Yield (%)
Treasury	4.6
AAA Corporate	4.8
BBB Corporate	5.5
B Corporate	6.2

The credit spread of the BBB corporate bond is closest to:

A.

0.9%

B.

1.8%

C.

0.45%

D.

1.2%