Select the option which correctly converts the given sentence into indirect speech.She said to me, "Shall I post these invitations for you today?"

• A. She asked me if she should post those invitations for me that day.
• B. She asked me that if she should post those invitations for me today.
• C. I asked her if I shall post these invitations for her that day.
• D. She asked me if she could post these invitations for me that day.