Posted by: Pdfprep
Post Date: November 3, 2020
One-by-one check
7, Fault rectification
A . 1->2->3->6->4->5->7
B . 1->2->3->6->5->4->7
C . 2->1->3->5->6->4->7
D . 2->1->5->3->4->6->7
Answer: D
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