Let the production unit range $20,000$ to $180,000$ normalized to $[0\mathrm{.}0,1\mathrm{.}0].$ Then using min$-$max method, $89,000$ is mapped to

Select one:

a$.$

$0\mathrm{.}89$

b$.$

$0\mathrm{.}556$

c$.$

$0\mathrm{.}431$