I really dont understand where I'm going wrong with COGS, both methods seem to be wrong.

Problem 6-6A (Part Level Submission) You have the following information for Novak Corp.. Novak Corp. uses the periodic method of accounting for its inventory transactions. Novak Corp. only carries one brand and size of diamonds-all are identical. Each batch of diamonds purchased is carefully coded and marked with its purchase cost. March 1 Beginning inventory 138 diamonds at a cost of $294 per diamond. March 3 Purchased 191 diamonds at a cost of $347 each. March 5 Sold 185 diamonds for $581 each March 10 Purchased 358 diamonds at a cost of $353 each. March 25 Sold 375 diamonds for $675 each. (a) Your answer is correct. Assume that Novak Corp. uses the specific identification cost flow method (1) Demonstrate how Novak Corp. could maximize its gross profit for the month by specifically selecting which diamonds to sell on March 5 and March 25 lowest cost. To maximize gross profit, Novak Corp. should sell the diamonds with the (2) Demonstrate hoW Novak Corp. could minimize its gross profit for the month by selecting which diamonds to sell on March 5 and March 25. highest cost. To minimize gross profit, Novak Corp. should sell the diamonds with the SHOW SOLUTION SHOW ANSWER LINK TO TEXT Attempts: 1 of 5 used