Winthrop Bank is a commercial bank with operations in North America. Evaluate the effect of each of the following scenarios on the bank's investment objectives, constraints, or risk-taking ability.

A. The target average maturity of loans is increased, with overall risk tolerance unchanged.

B. Asset&Liability Committee decides to increase Winthrop Bank's credit standards for loans, although Winthrop Bank's overall risk tolerance is unchanged.

C. Winthrop decides to sell its mortgage loans as soon as they are booked.

D. Asset&Liability Committee decides to increase Winthrop Bank's credit standards for loans, although Winthrop Bank's overall risk tolerance is unchanged.