As per IS : 456, the reinforcement in a column should not be less than________________?

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As per IS : 456, the reinforcement in a column should not be less than________________?

A. 0.5% and not more than 5% of cross-sectional area
B. 0.6% and not more than 6% of cross-sectional area
C. 0.7% and not more than 7% of cross-sectional area
D. 0.8% and not more than 8% of cross-sectional area