Final answer:
D would not be considered a holder in good faith because A did not have the right to negotiate the instrument for his personal benefit.
Step-by-step explanation:
In this case, D would not be considered a holder in good faith. The instrument was indorsed to A specifically for B's benefit, meaning A did not have the right to negotiate the instrument for his own personal benefit. Therefore, D should have been aware that A was only a trustee in favor of B and did not have the authority to transfer the instrument to D. As a result, D would not be considered a holder in due course.