Porters who carry heavy luggage always have a long piece of cloth with them . Before carrying the load on their heads they fold thhe cloth in the shape of a round disc and place it on their heads . By doing this they it on their heads . By doing this they

Options

A. decrease the thrust of the luggage
B. save their heads from possible injury
C. increase the area of contact of the load of luggage with their head
D. decrease the force exerted fy the load of luggage on the road .

Answer

C