Based on the information given in Figure $3-3$ and pages $86-88,$ what will the market development index become if the buying ceiling and purchase quantity per purchase are increased to $65\%$ and $1\mathrm{.}5,$ respectively? $($You may use an excel sheet to do the calculations.$)$

Group of answer choices

$32$

$42$

$56$

$30$

$37$