Answer: Option (a) is correct.
Step-by-step explanation:
Given that,
Beginning inventory = 5 units at $61
First purchase = 15 units at $63
Second purchase = 10 units at $74
Third purchase = 10 units at $77
Ending inventory = Beginning inventory × $61 + First purchase × $63
= 5 units × $61 + 15 units × $63
= $1,250
Cost of goods sold = Second purchase × $74 + Third purchase × $77
= 10 units × $74 + 10 units × $77
= $1,510