At the end of year 1998, Shepard bought nine dozen goats. Henceforth, every year he added p % of the goats at the beginning of the year and sold q % of the goats at the end of the year where p > 0 and q > 0. If Shepard had nine dozen goats at the end of year 2002, after making the sales for that year, which of the following is true?
