A spreadsheet has $9$ columns and $7$ rows. Column $2$ is titled $$Date$$ and lists dates in rows $2$ to $6.$ Column $3$ lists account names in rows $2$ to $7,$ without a header. Columns $4$ to $9$ are titled $$Units Purchased$,$Cost per Unit$,$Total Cost of Purchase$,$Units Sold$,$Selling Price per Unit$,$ and $$Total Sales$$ in row $1.$ Column $4$ has numerical values in rows $2,3,5,$ and $7.$ Column $5$ lists dollar amounts in rows $2,3,$ and $5.$ Column $6$ lists dollar amounts in rows $2,3,5,$ and $7.$ Column $7$ lists numerical values in rows $4,6,$ and $7.$ Column $8$ lists dollar amounts in rows $4$ and $6.$ Column $9$ lists dollar amounts in rows $4,6,$ and $7.$

Assuming perpetual LIFO, which formula correctly calculates the cost of the $990$ units sold on December $16?$

Multiple Choice

$=+$G$6*$E$2$

$=+$D$5*$E$5$

$=+$G$6*$E$5$

$=+$G$6*$H$6$