Concept:Paid-up capital is the actual amount received from shareholders on issued shares.Explanation:The company issued 100,000 shares at ₦1 each.So, the total issued share capital is ₦100,000.The unpaid amount owed by the two shareholders is ₦20,? No. Wait, let's rewrite in final clean way maybe.We need final correct output. Let's construct:Concept:Paid-up capital means the portion of issued share capital that has actually been paid for by shareholders.Explanation:Issued shares are 100,000 shares at ₦1 each.Therefore, the total issued capital is ₦100,000.The shareholders still owe ₦20,000; this is unpaid capital.Subtract the unpaid amount from the issued capital.Paid-up capital =₦100,000−₦20,000=₦80,000.The authorized share capital of ₦200,000 is not relevant to this calculation.Answer:₦80,000 (Option B).