Cost Flow in Job Order Costing

REQUIRED

a$.$ If ending work$-$in$-$process inventory on March $31$ is $$0,$ what was cost of goods manufactured for the month of March?

$

b$.$ If ending finished goods inventory on March $31$ is $$6,000,$ what was cost of goods sold?

$

c$.$ If the manufacturing process is complete for New Job and a total of $1,000$ units were produced, what is the total manufacturing cost per unit?

$$0$