Credit spread narrowing

From Kaplan Exam 2 Afternoon MC no.26

The plan trustee believe interest rates will increase over nxt year while credit spreads will narrow.

Why a benchmark with more corporate credit exposure reflects this view? Thanks.

my thinking would be that a narrowing the credit spread and increasing interest rate reflect a positive view on economic perspective and tightening monetary policy, under such circumstance the corporate fixed income would do better than the safer government bond, i could be wrong