F=72
g=6
------------

Therefore:


But what is e?
E=76
G=32
g=6
And:

Which means that:

If you take this value into account, you will discover that f is...

So I would have to say that the answer is approximately (c).
Answer:
3/4, 5/6, 8/10 this is in fraction form though. just change it to 3:4
Select both the 2nd and 4th options!
There is no difference. Both mean the same measurement except that 1.050 is presented in 4 significant figure and 1.05 in 3 significant figure.