<span>To get to the simplest form you have to divide numerator and denominator by numbers they can both be divided by, until you get to a fraction where you can't divide both anymore getting an integer as a result.
Here you can only divide by 2 and you get 1/5. That's the simplest form</span>, if you kept dividing you'd get decimals, but the simplest form must be integers.
Ok from the given the best choice to go with will be option B because its going from an up right and its going to flip and rotate.
is this the whole question because there's nothing to find?
Assuming you are talking about the rectangle,
width = area/lenght