Which Statement Accurately Differentiates Mild NCD from Major NCD

Which statement accurately differentiates mild NCD from major NCD?

A) Major NCD involves disorientation that develops suddenly, whereas mild NCD develops more slowly.
B) Major NCD involves impairment of abstract thinking and judgment, whereas mild NCD does not.
C) Major NCD criteria requires substantial cognitive decline from a previous level of performance, and mild NCD requires modest decline.
D) Major NCD criteria requires decline from a previous level of performance in three of the listed domains, and mild NCD requires only one.