Find the Cross Product $\mathbf { a } \times \mathbf { b }$

Multiple Choice

Find the cross product $\mathbf { a } \times \mathbf { b }$ ; where a = - i + 2j + 4k and b = 7i + 3j.

A) 15i - 8j + 10k
B) 3i + 11j - 9k
C) 7i + 13j + k
D) 14i + 5j - 12k
E) -7i - 23j + 33k
F) -10i + 27j + 13k
G) -12i + 28j - 17k
H) 18i + 32j + 7k