4. You have been given the following Information for Zane Corp.: . Equipment was purchased at a cost of $525,000 on March 1, 20X8, and was ready for use on April 1, 20X8. Zane paid a cash deposit of $25,000 and signed a 7% note for the balance payable In full on March 1, 20X9. The Interest rate In the note was the market rate of Interest for obligations of this nature. The equipment is estimated to have a seven-year useful life and a $50,000 residual value. . Zane's depreciation policy Is to use the straight-line method to depreciate all equipment, prorating the expense to the nearest full month. What Is the net book value of the equipment held by Zane as at December 31, 20X8? Round each calculation to the nearest whole dollar. a) $457,140 b) $468,450 c) $468,750 d) $474,105