Why is the distribution of possible risk ratios (or odds ratios) not symmetric around 1?

a. Relative risks are always structured such that the risk of the numerator is always greater than the risk of the denominator meaning values are greater than 1

b. When the risk of the numerator is less than the risk of the denominator, possible values fall between 0 and <1 and when the risk of numerator is greater than denominator, possible values fall between>1 and infinity

c. The distribution of possible risk ratios (or odds ratios) is symmetric around 0

d. The potential range of values less than 1 is much greater than the potential range of values greater than 1