Identify the following cash flow transactions as Operating (O), Investing (I), Financing (F), or Non-Cash (NC)

a. purchased marketable securities

b. Issuance of long-term note payable in exchange for cash

c. prepaid rent to landlord

d. depreciate the cost of equipment over its useful life

e. made a principal payment on a bank loan d. Purchase of treasury stock

f. Issuance of common stock for cash

g. Increase in accounts payable