USMLE Forum - Largest USMLE Community

Amyotrophic lateral sclerosis usually has onset at older ages but occasionally seen in young adults, what is true about the disease:
a inherited
b genetic
c sporadic
d congenital
e familial

sorry guys, I mixed up between 2 questions, it is not the Q I wanted to post....forget about it for now) sorry for the inconvenience)