Due to the collapse of the clock-tower situated opposite the town hall in main bazaar of a city, a number of persons died. The clock-tower belonged to the Municipal Corporation of the city and was exclusively under its control. It was 60 years old but the normal life of the structure of the building which had fallen could be 40 to 45 years having regard to the kind of material used. Mrs. X whose husband died due to the collapse of the clock-tower filed the suit for damages against the Municipal Corporation.
Which one of the following maxims is applicable in the aforesaid case?