90. Last year, John started up a sole proprietorship. The business operated at a loss of $46,000 and John had other taxable income of $22,000. This year, the business operated at a profit of $56,000 and he had other taxable income of $21,000. If John makes full use of his non-capital loss carry forward, what will be his taxable income this year?
a) $31,000
b) $47,500
c)$53,000
d)$56,000