30. No reduction of capital shall be effected unless the directors determine that immediately after the reduction the Company will be able to satisfy its liabilities as they become due in the ordinary course of its business and that the realizable assets of the Company will not be less than its total liabilities, other than deferred taxes, as shown in the books of the Company and its remaining capital, and, in the absence of fraud, the decision of the directors as to the realizable value of the assets of the Company is conclusive, unless a question of law is involved.