John Owns a Moving Company

John owns a moving company. On various occasions, when asked what he's observed over the years in dealing with the relocation of people, he responded with various observations, only one of which was accurate. Which one?

A) "When older adults move, they are likely to move to a state with warmer weather."
B) "When older adults move, they are likely to remain in the same state."
C) "Older adults are more likely to move than are middle-aged adults."
D) "Older adults are more likely to move than are young adults."