Which of the following statement/s is/are correct regarding Factories Act 1881?        
I.            Factory means where 10 or more workers are employed.      
II.            It included Tea plantation, Cocoa plantation and indigo Factory.    
III.            There was a provision of A certifying surgeon, appointed by local government.    IV.          There was a complete ban on any kind of employment for a child below the age of 7 years.