A company shall be deemed to be unable to pay its debts -
(i) if a creditor, by assignment or otherwise, to whom the company is indebted in a sum exceeding fifty pounds, then due, has served on the company, by leaving the same at its registered office, a demand under his hand requiring the company to pay the sum so clue, and the company has for three weeks thereafter neglected to pay the sum, or to secure or compound for it to the reasonable satisfaction of the creditor; or
(ii) if, in England or Ireland, execution or other process issued on a judgment decree or order of any court in favour of a creditor of the company is returned unsatisfied in whole or in part; or
(iii) if, in Scotland, the induciæ of a charge for payment on an extract decree, or an extract registered bond, or an extract registered protest have expired without payment being made; or
(iv) if it is proved to the satisfaction of the court that the company is unable to pay its debts, and, in determining whether a c