Which of the Following Statements Is/are CORRECT

Multiple Choice

Which of the following statements is/are CORRECT?
1) A nickel-cadmium battery is an example of a secondary or rechargeable battery,often used in rechargeable cordless appliances.
2) Hydrogen-oxygen fuel cells use the heat of combustion of hydrogen to recharge lead storage batteries.
3) LeClanché cells are the most efficient rechargeable batteries,but they are rarely used due their high cost of production.

A) 1 only
B) 2 only
C) 3 only
D) 1 and 3
E) 1,2,and 3