QUES: XDP files are Data Files primarily associated with UNIX File

correct the punctuation.

CORRECTED: XDP files are Data Files primarily associated with UNIX File.

QUES: I General automorphisms structure theory and characterization which appeared in the same journal in 1989

correct the punctuation.

CORRECTED: I. General automorphisms, structure theory and characterization which appeared in the same journal in 1989:

QUES: Average retail price 776700

correct the punctuation.

CORRECTED:
Average retail price: 7767.00 O