已知 $a=(\lambda+1,0,2), b=(6,2 \mu-1,2 \lambda)$, 若 $a \| b$, 则 $\lambda$ 与 $\mu$ 的值可以是 ( )
选 $A$ 由题意知 $\left\{egin{array}{l}rac{\lambda+1}{6}=rac{2}{2 \lambda}, \ 2 \mu-1=0,\end{array} 	herefore\left\{egin{array}{l}\lambda=2, \ \mu=rac{1}{2},\end{array}
ight.
ight.$ 或 $\left\{egin{array}{l}\lambda=-3, \ \mu=rac{1}{2} .\end{array}
ight.$