A a2 + 1/a2 = a3 + 1/a3
B a2 + 1/a2 = a4 + 1/a4
C 1/a2 + 1/a4 = a2 + 1/a2
D a2 - 1/a2 = a4 - 1/a4
Correct Answer: Option A
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