12. In considering whether any arrangements for repayment were bona fide, the extent to which the arrangements have been carried out by the borrower is reviewed and, if the borrower is in default, any unusual circumstances that might have hindered them from being carried out. Whether or not the period allowed for repayment is "within a reasonable time" is a question of fact. In a given situation, one of the factors considered in determining what is a reasonable time is the normal commercial practice which would prevail in a similar situation. For example, for a housing loan, normal commercial practice requires the borrower, among other things, to give the lender some security (not necessarily a mortgage) and to repay any balance on the loan should the property be sold while an amount is still owing.