Which of the following explains which of the fertilized cells results in Down syndrome?
选项：

A:Cell 1 because the process of nondisjunction removed a chromosome from the cell.
B:Cell 2 because the process of nondisjunction created a cell with a trisomic condition.
C:Cell 3 because the process of meiosis segregated the sister chromatids into individual chromosomes in the final cells.
D:Cell 4 because the process of independent assortment allowed each cell to possess its own traits regardless of the inheritance of other traits.