About the basic concepts of link aggregation, the following description which is wrong?

About the basic concepts of link aggregation, the following description which is wrong?
A . Link aggregation is a method of binding a group of physical interfaces together as a logical interface to increase bandwidth and reliability.
B . Link aggregation follows the IEEE 802.3ad protocol.
C . Logical links formed by binding multiple physical links are called link aggregation groups (LAGs) or trunk.
D . There are only active interfaces for link aggregation.

Answer: D