Option b that is 198.

Explanation: Place value= 200,Face value=2

Difference= 200-2=198.

Place value is the number multiplied with 100(since 2 is in hundred place) and face value is the number itself.

Another possible answer could have been 19998. That is 2 multiplied by 10000 to get the place value minus 2(face value) . But since it is not given in the options so we go with the first answer. Thank you.