Concept:Called-up capital is the part of issued share capital that shareholders are asked to pay.Explanation:Issued share capital is the total value of shares actually offered to subscribers.When a company asks subscribers to pay only a portion of the issued share capital, that requested portion is called called-up capital.If the subscribers have already paid that amount, it becomes paid-up capital.Therefore, the amount the company has asked subscribers to pay is called-up capital.Answer:B. called-up capital