Fergie's total overhead rate is

A) $2.40.
B) $4.00.
C) $6.40.
D) $6.53.

The total overhead rate is calculated by adding the variable and fixed manufacturing overhead costs and then dividing by the normal production level in labor hours. The calculation is $(\$92,400+\$55,440)/30,800=\$4.80$ . However, the correct calculation should consider the total overhead costs and divide by the normal production level in labor hours, which seems to have been miscalculated in the provided options. Given the discrepancy in the provided options and the calculation, it appears there was an error in my initial explanation. The correct approach to find the total overhead rate involves dividing the total overhead costs by the total labor hours or units, depending on the method of application specified. Since overhead is applied based on direct labor hours, we should calculate the rate per labor hour. However, without the correct figures or a misunderstanding in the calculation process, the provided answer choices do not directly align with the typical calculation method.