The correct answer is D, if any amount of money is contributed, no minimum required. This question tests knowledge of MSRB Rule G-37, which governs political contributions by municipal finance professionals (MFPs). The rule is designed to prevent “pay-to-play” practices, where firms make political contributions to win municipal underwriting business.

Under Rule G-37, an MFP is allowed to contribute up to $250 per election to an issuer official only if the MFP is entitled to vote for that official. However, in this scenario, the MFP is not entitled to vote for the issuer official. Therefore, any contribution—regardless of size—triggers restrictions.

Specifically, even a small contribution (e.g., $1) would result in a two-year ban on the broker-dealer’s ability to engage in negotiated municipal securities business with that issuer. This strict rule ensures that firms cannot circumvent regulations by making small contributions.

Choices A, B, and C are incorrect because the $250 threshold only applies when the MFP is eligible to vote. Since that condition is not met here, there is no permissible minimum contribution amount.

Thus, any contribution triggers the restriction, making choice D correct.