Consider three vectors →A=^i+^j−2^k,→B=^i−^j+^k and →C=2^i−3^j+4^k. A vector →X of the form α→A+β→B (α and β are numbers) is perpendicular to →C. The ratio of α and β is:
A
1:1
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B
2:1
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C
−1:1
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D
3:1
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