11.John Vickery, a trustee for the pension plan of Richardson Industries, has just received a commission schedule from XYZ Brokerage, a firm with which he is not now trading. The fee schedule is lower than the schedule of ABC Brokerage, which is the firm Vickery now uses for most transactions. ABC also provides research data and performance measurement for the pension plan, services that XYZ cannot handle. Vickery is concerned that he may be violating his fiduciary duty of loyalty by not using the lowest cost brokerage firm. Based on CFA Institute Standards of Professional Conduct, which of the following statements is true?

a.Vickery can continue to trade through ABC if he determines, in good faith, that the value of the services is commensurate with the cost.

b.Vickery will violate his fiduciary duty unless he immediately begins trading through XYZ.

c.Vickery will not violate his fiduciary duty unless he personally profits from his relationship with ABC.

d.The "safe harbor" concept allows fiduciaries to pay higher commissions even though the services are not fully commensurate with the cost.