The correct answer is A.
You can verify this by plugging in 33 for F and solving. This will give you 5/9.
Then, plug in 34 for F and solve. This will yield 10/9 degrees Celsius.
Since 10/9 - 5/9 = 5/9, you can conlcude that for every increase in 1 degree Fahrenheit, there is an increase of 5/9 of a degree Celsius.
Hope this helps,
Bri
