Solve for: (8y^4z^6)/(4y^6z^5)

Expression: $\frac{ 8{y}^{4}{z}^{6} }{ 4{y}^{6}{z}^{5} }$

$\frac{ 2{y}^{4}{z}^{6} }{ {y}^{6}{z}^{5} }$

$\frac{ 2{y}^{4}z }{ {y}^{6} }$

$\frac{ 2z }{ {y}^{2} }$