Martin was a professional classical guitac plaver until a motorcycle accident left him ditabled, Alter long months of thetrapy, tet hired an experienced luthier and started a small shop to make and sell Spanich guitars. The guitars sell for 5900 and the fixed monthly operatisg cous are as follown: Martin's accountant fold him about contribution margin ratios, and Martin understood clearfy that for every dollar of sales, 50.65 went to cover his fixed costs, and anything above that point was profit. Martin wishes to earn $4000 of operating profit each month. Calculate the number of guitars Martin will need to sell to achieve the target profit. (Round your answer up to the nearest whole guitar.) 13 goitars 12 guitan 3 guitars 4 guitars