Use this information to answer the following questions

ROK Company uses the PERIODIC inventory system and had the following information for $2013$:

Beginning Inventory: $600$ units @ $$10\mathrm{.}00$

Purchase: March $1$: $1,000$ units @ $$11\mathrm{.}20$

Purchase: July $31$: $800$ units @ $$11\mathrm{.}00$

Purchase: October $1$: $1,600$ units @ $$12\mathrm{.}50$ each

Units sold during the year amounted to $3,200$ units.

What is the value assigned to ending inventory using:

$1.$The average cost method

$2.$FIFO Costing

$3.$ LIFO Costing

$4.$ What is the value of ending inventory using specific ID costing method? $($Assume that $300$ units are from the March $1$ purchase and the remaining units are from the July $31$ purchase$)$