please answer all 4 multiple choice questions

Qi Corp.repaid $8,000 worth of long-term bonds. What is the general journal entry to record this transaction? DEBIT: Equity for $8,000; CREDIT: Bonds Payable for $8,000 DEBIT: Bonds Payable for $8,000; CREDIT: Equity for $8,000 DEBIT: Bonds Payable for $8,000; CREDIT: Cash for $8,000 DEBIT: Cash for $8,000; CREDIT: Bonds Payable for $8,000 A Co. has $100 par value preferred stock that sells for $108 and has a dividend of 3% of par value, what is the cost of preferred stock 3.00% 5.86% 2.78% 4.59% DEBIT: Revenue for $1,500; CREDIT: Cash for $1,500 A company sold $1,500 worth of goods and received immediate payment (the cost of goods sold was $1,200). What are the general journal entries to record this transaction DEBIT: Cost of Goods Sold for $1,200; CREDIT: Inventory for $1,200 DEBIT: Revenue for $1,500; CREDIT: Cash for $1,500 DEBIT: Inventory for $1,200; CREDIT: Cost of Goods Sold for $1,200 DEBIT: Cash for $1,500; CREDIT: Revenue for $1,500 DEBIT: Inventory for $1,200; CREDIT: Cost of Goods Sold for $1,200 DEBIT: Cash for $1,500; CREDIT: Revenue for $1,500 DEBIT: Cost of Goods Sold for $1,200; CREDIT: Inventory for $1,200 What measures the total cost of financing for a firm in percentage terms? Weighted average cost of capital Firm financing rate Discount rate Cost of internal common equity After-tax cost of financing