Use the following labor budget data for Roy & Miller Accounting, LLP$.$

The budgeted overhead cost for the year is $$2,318,400.$ The company has estimated that one$-$third of the budgeted overhead cost is incurred to support the firm's two partners, and two$-$thirds goes to support the staff accountants. The current audit bid for Monoco Industries requires $$24,000$ in direct partner professional labor, $$35,000$ in direct staff accountant professional labor, $$4,000$ in direct material.

What is the overhead rate based on a single cost driver $($rounded to the nearest percentage$)?$

A$.91\%$

B$.232\%$

C$.71\%$

D$.61\%$

E$.92\%$