The correct option is A 854
The fraction whose numerator is gretaer than or equal to the denominator is called an imroper fraction.
Hence, value of x (the numerator) should be greater than 853 to make the fraction x853 as a improper fraction.
The given options for the values of x are:
854, 852, 851, 850
The given denominator is: 853
854 (the numerator) is possible value of x which is more than 853 (The denominator)
Hence, Option (a) gives the possible value of x (= 854)