$[$The following information applies to the questions displayed below.$]$

Laker Company reported the following January purchases and sales data for its only product. For specific identification, ending inventory consists of $310$ units from the January $30$ purchase, $5$ units from the January $20$ purchase, and $30$ units from beginning inventory.

Date Activities Units Acquired at Cost Units sold at Retail

January $1$ Beginning inventory $205$ units @ $ $13\mathrm{.}00=$ $ $2,665$

January $10$ Sales $165$ units @ $ $22\mathrm{.}00$

January $20$ Purchase $140$ units @ $ $12\mathrm{.}00=1,680$

January $25$ Sales $145$ units @ $ $22\mathrm{.}00$

January $30$ Purchase $310$ units @ $ $11\mathrm{.}50=3,565$

Totals $655$ units $ $7,910310$ units

The Company uses a periodic inventory system. For specific identification, ending inventory consists of $310$ units from the January $30$ purchase, $5$ units from the January $20$ purchase, and $30$ units from beginning inventory. Determine the cost assigned to ending inventory and to cost of goods sold using

$($a$)$ specific identification,

$($b$)$ weighted average,

$($c$)$ FIFO, and

$($d$)$ LIFO.