For a singly reinforced rectangular beam with a width of $30$ cm $,$ height $h=70cm,$ and effective depth $d=63\mathrm{.}5$ cm $,$ using materials with $f^{\text{'}}c=350kg\frac{f}{c}{m}^2$ and $fy=4200kg\frac{f}{c}{m}^2,$ answer the following questions according to the code requirements:

What is the minimum reinforcement amount for this beam? Calculate the minimum design moment capacity corresponding to the minimum reinforcement amount.

What is the maximum reinforcement amount for this beam? Calculate the maximum design moment capacity corresponding to the maximum reinforcement amount.