Read the statement:

When Mendel crossed a purple-flowered pea plant with a white-flowered pea plant, the offspring were always X. When Mendel crossed the offspring with each other, the distribution was about Y purple and Z white. The more experiments Mendel did with pea plants, the closer they approached these percentages.

Which option correctly replaces X, Y, and Z in the statement?

a. X: purple
Y: 25%
Z: 75%

b. X: white
Y: 25%
Z: 75%

c. X: white
Y: 75%
Z: 25%

d. X: purple
Y: 75%
Z: 25%