Question

2) Which one of the following sentence is grammatically correct?
a) Those books are of I?
b)Those books are my.
C) Those books are mine.
b) Those books are I'd
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Answer 1

Answer:

the C) Those books are mine option is right

Answer 2

Answer to your question is: "C"
Part C of the given options correct
"Those books are mine" is grammatically correct.