$($a$)$ Prepare an absorption costing profit statement for the period. The statement should include the total cost of production, closing inventory value, total gross profit and total net profit. Use vertical table $(12$ marks$)$

$($b$)$ Using marginal costing, calculate for the period:

$($i$)$ total contribution; $(3$ marks$)$

$($ii$)$ total net profit; $(3$ marks$)$

$($iii$)$ break$-$even sales revenue. $(3$ marks$)$

$($c$)$ Explain why the net profit using absorption costing differs from that using marginal costing. $(4$ marks$)$

$[$Total:$25$ Marks$]$