In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best expresses the same sentence in Indirect/Direct speech. My friend said to me, "I am willing to help you on a condition."

• My friend said to me that he is willing to help me on a condition.
• My friend said to me that he has had been willing to help me on a condition.
• My friend said to me that he has been willing to help me on a condition.
• My friend said to me that he was willing to help me on a condition.