Mr. A sold his basement floor in Delhi in 1999 & did an agreement to sell in favor of Mr. B & did a Registered GPA on Rs 2 stamp paper to Mr. C.
Mr. C then did a Registered GPA with consideration in 2006 to Mrs. D, who is daughter of Mr. B.
Now Mr. B & his daughter want to sell that property. Who should be required & what should be done?