An increase in the interest rate:

A、reducesplannedinvestmentbecausetheinterestrateisthecostofborrowingtofinanceinvestmentprojects.
B、increasesplannedinvestmentbecausepeoplewhomakemoneyfrominteresthavemoremoneytoinvest.
C、hasnoeffectoninvestment.
D、maybecausedbyadropininvestmentdemand.