A type of plant that produces red flowers is crossed with a plant that produces white flowers. The alleles for flower color exhibit incomplete dominance, and all of their offspring have pink flowers. If two of the pink-flowered offspring were crossed, which of the following ratios of red, pink, and white flowers would you find in their offspring?

33 percent red : 33 percent pink : 33 percent white
50 percent red : 0 percent pink : 50 percent white
0 percent red : 100 percent pink : 0 percent white
25 percent red : 50 percent pink : 25 percent white