The Bank of Canada decides to reduce the demand for credit by raising short term interest rates. What is the likely relative effect on the value of the following 2 bond portfolios: Portfolio A has a "duration" of 6 and Portfolio B has a "duration" of 4 (assuming no purchases or sales and ignoring any other considerations)?

Portfolio A and Portfolio B with both decrease in value by roughly the same amount

Portfolio A will increase in value and Portfolio B will decrease in value

Portfolio B will decrease in value by less than the decrease in value of Portfolio A

Portfolio A will increase in value by more than the increase in value of Portfolio B