Arrange the correct threading sequence pattern of a sewing machine.
1. Needle
2. Spool
3. Thread take up lever
4. Tension discs
A. 1, 2, 4 and 3
B. 2, 4, 3 and 1
C. 3, 1, 2 and 4
D. 4, 3, 1 and 2
Answer: Option B
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