Baker Inc. acquired equipment from the manufacturer on 10/1/11 and gave a noninterest-bearing note in exchange. Baker is obligated to pay $918,000 on 4/1/12 to satisfy the obligation in full. If Baker accrued interest of $9,000 on the note in its 2011 year-end financial statements, what is its imputed annual interest rate?
A. 6%
B. 4%
C. 5%
D. 2%