Answer in one sentence.

1) What is a Letter of Credit?
Ans:- 
A Letter of Credit is a payment or method, generally used for an international trade transaction.

2) Which facility is given to Current Account holder?
Ans:- 
Overdraft facility is given to Current Accountholder.

3) What do you mean by stop payment of cheque?
Ans:- A cheque in respect of which the account holder requests the bank not to make payment or stop payment on it is called stop payment cheque.