APZ Limited sells one product for which data is given below N$ per unit Selling price 10 Variable cost 6 Fixed cost 2 The fixed costs are based on a budgeted level of activity of 5 000 units for the period. How many units must be sold if APZ limited wishes to earn a profit of N$6 000 for one period? Select one: O a. 8 000 O b. 4 000 O c. 1 500 d. None of all O e. 1 600