Answer: B. withdrawing funds from the account for the custodian's use
Step-by-step explanation:
Under the Uniform Gifts to Minors Act, the Custodian's duty is to manage the account for the minor and allocate the assets within in such a way that it will bring about the best returns for the minor.
Custodians should not abuse this power for their own benefit or gain which is why the custodian withdrawing funds from the account for their own use is a violation of the act.