Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = 5i + 3j + 4k, v = -10i - 6j - 8k
A. 5
; 
(-5i - 3j - 4k)
B. 5
; 
(-5i - 3j - 4k)
C. 0; no direction
D. 0; -5i- 3j - 4k
Answer: C
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