Pennywise, Inc. had a great year. Sales reached an all-time high of $25 million, with a gross margin of $8.5 million. Depreciation was recorded at $850,000. Earnings before interest and taxes were $3 million, interest was $1.5 million, and total taxes were $600,000. The firm's operating cash flow (OCF) was:

a.$9,100,000

b.$3,250,000

c.$2,400,000

d.$7,050,000

e.$1,550,000