I really need help completing and understanding this problem. Very much appreciated.

A company had the following purchases and sales during its first month of operations: January 1 January 9 January 17 January 27 Purchased 10 units at $4.00 per unit Sold 6 units at $12.00 per unit Purchased 8 units at $5.50 per unit Sold 7 units at $12.00 per unit Using the Periodic weighted average method, what is the value of cost of goods sold? (Round weighted average cost per unit to 2 decimal places, and final answer to the nearest whole dollar.) Multiple Choice $23. O $61. O $84. $5. O O $27