book Maths Puzzle Numerical Ability

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"A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 15.4 m/s. The cliff is 43.0 m above a flat horizontal beach.

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OK I need to simplify this question

x-2 / 3x-2y
*times*
9x^2-4y^2 / 2x^2+x-10

A) 3x-2y / 7x+1
B) 3x+2y / 2x-5
C) 3x+2y / 2x-5
D) 3x^2+2y^2 / 2x+5

Thanks! is their a roman numeral sheet i can look at that has all the roman numerals on it?