What does the List<?> declaration imply about the List's element type?

A Option A is incorrect because the List does not necessarily hold objects of any subtype of Object. The wildcard "?" in the List<?> declaration does not necessarily extend Object.

B: Option B is incorrect because the List does not necessarily hold elements of the class List. The wildcard "?" in the List<?> declaration does not necessarily extend List.

D: Option D is incorrect because the List is not of a specific generic type determined at runtime. The wildcard "?" in the List<?> declaration means that the element type is unknown and can vary.