If a nonessential variable is changed on a WPS, which of the following actions must occur?

If a nonessential variable is changed on a WPS, which of the following actions must occur?
A . The welding inspector can simply make the change on the WPS and initial as proof of acceptance.
B . It may be changed on the WPS without requalifying the welding procedure.
C . The welding procedure will need to be requalified by performing mechanical testing.
D . Impact testing must be performed at the discretion of the welding engineer.

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Answer: B