A.control file, which is a small binary file that records the physical structure of the database
B.A binary file is computer -readable but not human-readable. All executable programs are stored in binary files, as are most numeric data files
C.text files are stored in a form (usually ASCII) that is human-readable.
D.Object file, an organized machine code file created by a compiler with .obj file extension
So Ans should be C text file