So the fraction is 5/20 This means the denominator is 4 time numerator = 20 = 5 x 4 So from the option u have to pick option A as it is 4/16 This means again the denominator is 4 times the numerator so the value of 5/20 and 4/16 are the same this applies to all numbers. Back to the point answer is A Hope u understood If not comment and I will explain in more detail