Your answer would be, C 5/45 and 4/36. In simplified form they both equal 1/9, meaning they are a proportion.
128.42.64.78 is a valid IP address
1 1 9 . 6 5
1 is the the hundreds place
1 is the tens place
9 is the ones place
6 is the tenths place
5 is the hundredths place
Since it’s in the tenths place it’s 50
The answer should be 686.40