Find the normal vector for ř(t) = (3t, sin t, cos t A. Ñ(t) = (0, sin t, – cos t) B. N(t) = (0, – sin t, – cos t) C. Ň(t) = (0, sin t, cos t) D. Ñ(t) = (0, – sin t, cos t) E. none of the above

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