A stockbroker purchases 500 shares at ₦40 each on behalf of a client and charges a commission of 2%. What is the total amount payable by the client?

Cost of shares = 500 × ₦40 = ₦20,000. Commission = 2% × ₦20,000 = ₦400. Total payable = ₦20,000 + ₦400 = ₦20,400. Option A ignores the commission, option C uses 4% commission, and option D incorrectly adds ₦2,000.