Under Section 109 Companies Act 2013, a poll on a question at a general meeting shall be ordered by the Chairman:

1. Section 109(1) Companies Act 2013: 'Before or on the declaration of the result of the voting on any resolution on show of hands, a poll may be ordered to be taken by the Chairman of the meeting on his own motion, and shall be ordered to be taken by him on a demand made in that behalf, — (a) in the case a company having a share capital, by the members present in person or by proxy, where allowed, and having not less than ONE-TENTH of the total voting power or holding shares on which an aggregate sum of not less than FIVE LAKH RUPEES or such higher amount as may be prescribed has been paid-up.' 2. The demand may be withdrawn at any time by the person who made it. 3. Section 109(2) provides for time of taking poll. 4. Hence option B is correct. _Source: Companies Act 2013 (Act 18 of 2013), Govt. of India MCA — Companies Act 2013, Section 109_