Hwa Hong Ltd prepared a flexible budget which revealed total production costs of $79,000 at an anticipated 10,000 unit activity level. Variable production costs were (per unit) $1.50 for direct materials, $3.50 for direct labour, and $0.75 for variable factory overhead. How much are total anticipated production costs in Hwa Hong's flexible budget for an activity level of 10,800 units?

A) $21,500.

B) $83,600.

C) $79,000.

D) $62,100.