Rank the following protein sources from highest to lowest expected PDCAAS score based on completeness and digestibility: 1) Whey protein isolate, 2) Cooked lentils, 3) Soy protein isolate, 4) Whole wheat flour. Select the correct ordering.

• A. Whole wheat flour > Cooked lentils > Whey protein isolate > Soy protein isolate
• B. Whey protein isolate > Soy protein isolate > Cooked lentils > Whole wheat flour
• C. Cooked lentils > Whole wheat flour > Soy protein isolate > Whey protein isolate
• D. Soy protein isolate > Whey protein isolate > Whole wheat flour > Cooked lentils

Answer: (B)