Who is most likely to show permanent cognitive or behavioral deficits?

a. Hank, whose mother lost her job when she was 5 months pregnant and didn't get proper nutrition until she found a good job when Hank was 2.5 years old.
b. Lila, whose mother was low income and malnourished before she became pregnant, at which point she received government-sponsored nutritional supplements.
c. Ariel, whose teenage mother lived with her parents while she was pregnant and Ariel was young. When Ariel was 4-years-old, they moved out and her mother's job didn't pay enough to provide them with proper nutrition.
d. Tomàs, whose mother had a high-paying job all through pregnancy but had a tragic accident when Tomàs was 3.5 years old, which forced her to quit her job and use up all her savings; they no longer had enough to eat.

Answer: A