The word “shrewd” used to mean “evil, bad, wicked”, and now it refers to “clever or sharp in practical affairs”.This is an example of （） of meaning.

The word “shrewd” used to mean “evil, bad, wicked”, and now it refers to “clever or sharp in practical affairs”.This is an example of （） of meaning.
A.extension
B.restriction
C.degeneration
D.elevation
正确答案：D