Surplus Tetramino Puzzle - Solution

The Puzzle:

If you re-assemble the pieces of each of the four compositions shown below, three of them will be the same shape and one won't.

Which is the odd one out?

Author: Peter Grabarchuk
This Puzzle © 2007 Peter Grabarchuk. All Rights Reserved.
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Our Solution:

Composition B does not belong, as shown below:

Puzzle Author: Grabarchuk, Peter

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