The followings are balances of accounts to prepare income statement. Two-year data has been provided. Based on this information, answer the following question.

Hawaii Travel
Account Balances	Jan. 2016		Jan. 2015
Administrative expenses	$ 5,000		$ 5,000
Cost of goods sold	4,000		3,500
Interest expense	10,000		7,000
Interest income	10,000		12,000
Loss on sale of equipment	1,000		700
Net sales	60,000		45,000
Selling expenses	10,000		8,000
Income Tax	8,000		6,500

Based on the vertical analysis, cost of goods sold in 2016 is [ Select ] ["6.7%", "8.3%", "13.3%", "16.7%"] of total revenue in 2016.