Which of the following statement(s) is/are in correct? (i) Two thin woollen sweaters are warmer than a thick woollen sweater. (ii) It saves fuel if we cook food in a vessel which is blackened at the bottom and polished from the sides. (iii) The cable wires between two poles are left loose because in summers, the wires do not break on expanding.

• A.         Only (i) and (iii) 
• B. Only (ii) and (iii)
• C.        Only (iii)           
• D. Only (i)