In the CAO's tentative capital improvement expenditure program, what should the total estimated cost be in relation to available funds?

The correct choice indicates that the total estimated cost of the capital improvement expenditure program should be double the available funds. This approach ensures that there is a robust financial planning strategy in place that accounts for potential uncertainties and variations in costs that may arise throughout the program. By estimating costs at twice the available funds, it allows for comprehensive budgeting.

This method helps to safeguard against unanticipated expenses and potential funding shortfalls, ensuring that the program can still proceed effectively even if costs exceed initial estimates. It also encourages careful prioritization and management of resources, which is vital in capital improvement initiatives.

In capital budget planning, having a cushion or contingency can prevent project delays or cutbacks should costs rise unexpectedly. Thus, estimating costs to be double the available funds serves as a proactive strategy in financial management.