Accounting Querstion: Please help with all incorrewct answers. Check screenshot.

Exercise $4-11($Algo$)$ Computing product cost per unit using plantwide method and activity$-$based costing LO P$1,$ P$3$

Using a plantwide overhead rate based on $3,250$ direct labor hours, compute the total product cost per unit for each product.

Consider the following additional information about these two products. If activity$-$based costing is used to allocate overhead cost,

$($a$)$ compute overhead activity rates,

$($b$)$ allocate overhead cost to Product A and Product B and compute overhead cost per unit for each, and

$($c$)$ compute product cost per unit for each.