A bond traded at $97(1)/(2)$ means that

A$.$

The bond pays $97(1)/(2)\%$ interest.

B$.$

The bond trades at $$975$ per $$1,000$ bond.

C$.$

The market rate of interest is below the contract rate of interest for the bond.

D$.$

The bond's interest rate is $2(1)/(2)\%.$