In this question, we need to try all three numbers given to find if they are greater than 0.598. Since the given numbers have maximum 4 digits after the decimal point, it helps us compare easily if we add needed number of zeros at the end of all numbers mentioned in the question:
Lower limit: 0.598 = 0.5980
0.59 = 0.5900
We can try statement I. 0.5900 < 0.5980; that is why it is not greater than 0.598, but it is smaller than this value.
In statement II, 0.5979 is given. We notice that 0.5979 < 0.5980; that is why it is not greater than 0.598, but it is smaller than this value.
Lastly, we try statement III, 0.5985 > 0.5980; meaning that this number is greater than 0.598. This choice is the only number providing the given restriction.
The correct answer is (B).