Roofer offered to repair Owner's roof in a workmanlike fashion by June $1,$ if Owner on that day would pay a $$3000$ debt that Roofer owed to the Bank. Owner said, $"$O$.$K$."$ Roofer informed bank of the agreement. Roofer repaired the roof. Bank demanded payment but Owner refused.

If Bank sues Owner for $$3,000,$

$($A$)$ Bank will not prevail because it is only an incidental beneficiary and cannot enforce Owner's promise.

$($B$)$ Bank will not prevail, because Owner's promise is an oral promise to answer for the debt of another.

$($C$)$ Bank will prevail, because it is an assignee of Owner's promise.

$($D$)$ Bank will prevail, because it is a third party beneficiary of Owner's promise.