E and f were a little complicated.
-33 is a rational number. It is an integer with a definitive stopping point (by this I mean it is not a decimal number with endless repeating digits).
A is the correct answer.
This is because if you multiply 0.25 by 4, that would equal 1. Now, multiply 12 by 4 as well and you'll get 48. So the scale is 1:48.
The answer is C
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