Assume the budget standard for staff salaries, a variable cost, is $$50\mathrm{.}00$ per output and the preliminary budget assumed $4,000$ outputs would be produced. At the end of the year, $4,060$ units were produced. The final, restated budget for staff salaries should:

$$ remain the same as the preliminary budget.

increase by $$3,000.$

decrease by $$3,000.$

It cannot be determined.