Fill in the blank with the appropriate answer.
When installing junction and pull boxes for conductors operating at over 1,000V, the junction or pull boxes shall have sides ______.
A. that are spot-welded to form good mechanical and electrical continuity.
B. that have concentric or eccentric knockouts.
C. (one or more) that are removable.
D. that are bonded with a separate bonding jumper.
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