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If y = m 1 x + c 1 and y = m 2 x + c 2 , m 1 ≠ m 2 are two common tangents of circle x 2 + y 2 = 2 and parabola y 2 = x, then the value of 8|m 1 m 2 | is equal to :

1. 3 + 4 2
2. – 5 + 6 2
3. – 4 + 3 2
4. 7 + 6 2

Correct answer: – 4 + 3 2

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