Tomas has sickle cell disease. To learn more about his ancestors' health, he's mapping his family's medical history. During an interview with his great-grandmother, Tomas discovers that several members of his family had sickle cell disease; two of his great-uncles and a cousin died of the disease. Based on this information. _____
a) Tomas family members who died of sickle cell disease also suffered from obesity, type 2 diabetes, and vitamin C deficiency
b) Tomas probably has Asian ancestry
c) Tomas has defective hemoglobin
d) Tomas should take iron supplements to treat his disease