The fragile rare crystal that is the power supply of the ship is damaged, and Tu and the rest of the crew must find a replacement.
How should this sentence be revised for correct comma usage?
A.
The fragile, rare, crystal that is the power supply of the ship is damaged, and Tu and the rest of the crew must find a replacement.
B.
The fragile, rare crystal that is the power supply of the ship is damaged, and Tu and the rest of the crew must find a replacement.
C.
The fragile rare, crystal that is the power supply of the ship is damaged, and Tu and the rest of the crew must find a replacement.
D.
The fragile rare crystal, that is the power supply of the ship is damaged, and Tu and the rest of the crew must find a replacement.