Which Two of the Following Four Vectors Are Parallel?
(A) $( 0,8,2 )$

Short Answer

Which two of the following four vectors are parallel?
(a) $( 0,8,2 )$ (b) $( - 1,4,1 )$ (c) $\left( - \frac { 1 } { 2 } , 2 , \frac { 1 } { 2 } \right)$ (d) $\left( \frac { 7 } { 2 } , 5 , - \frac { 7 } { 2 } \right)$