Karl’s keychain company produces keychains that sell for $1 each. On January 1st, 2015, the company had an inventory of 8,000 keychains. During 2015, the company sold 900,000 keychains. At the end of the business year on December 31st, 2015, the company’s inventory of keychains was 9,000. What was the value of karl’s total production and inventory investment in 2015?
a) $901,000; investment: $1,000
b) $891,000; investment: $17,000
c) $900,000; investment: $9,000