Sebastien and Manon are married and self$-$employed workers. They have agreed that each should keep a minimum of $$5,000$ in a savings account for unforeseen circumstances. Their minimum monthly living expenses amount to $$2,500.$ They each want to take out $$2,500$ a month of individual disability insurance coverage with benefits payable up to age $65.$ However, to reduce the premium amount, they want benefits to be payable only once their respective contingency savings accounts have been fully depleted to pay the monthly living expenses.

What waiting period would their agent recommend?

$120$ days.

$90$ days.

$60$ days.

$30$ days.