Harold is a 66-year-old retired school bus mechanic.

Defined Benefit Pension Plans (DBPPs) provide a guaranteed income stream to the plan member after retirement, based on a formula considering factors like years of service and salary history. Generally, unless explicitly set up with survivor benefits, DBPPs do not automatically transfer income to a surviving spouse upon the member's death. In Harold's case, if no survivor benefit option was selected during retirement setup, Karl would not receive any income from Harold’s DBPP. Therefore, the correct answer isA. $0as no automatic provision ensures Karl receives benefits unless Harold had chosen and paid for survivor benefits​​.