The MINIMUM separation distance between grounded metal telecommunications pathway and unshielded power lines is:

The MINIMUM separation distance between grounded metal telecommunications pathway and unshielded power lines is:
A . 75 mm (3 in)
B . 150 mm (6 in)
C . 300 mm (12 in)
D . 610 mm (24 in)
E . 1220 mm (48 in)

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Answer: C