Molecular weight range $x_i$

$\backslash$table$[[15,000-30,000,0\mathrm{.}04],[30,000-45,000,0\mathrm{.}07],[45,000-60,000,0\mathrm{.}16],[60,000-75,000,0\mathrm{.}26],[75,000-90,000,0\mathrm{.}24],[90,000-105,000,0\mathrm{.}12],[105,000-120,000,0\mathrm{.}08],[120,000-135,000,0\mathrm{.}03]]$

Which of the below shows the correct weight fraction $(W_i)$ associated with the $45,00060,000$ and $105,000-120,000$ ranges in this polymer sample respectively?

a$.W_i=0\mathrm{.}09$ for $45,000-60,000$ and $W_i=0\mathrm{.}16$ for $105,000-120,000$

b$.W_i=0\mathrm{.}15$ for $45,000-60,000$ and $W_i=0\mathrm{.}12$ for $105,000-120,000$

c$.W_i=0\mathrm{.}13$ for $45,000-60,000$ and $W_i=0\mathrm{.}13$ for $105,000-120,000$

d$.W_i=0\mathrm{.}11$ for $45,000-60,000$ and $W_i=0\mathrm{.}12$ for $105,000-120,000$

e$.W_i=0\mathrm{.}16$ for $45,000-60,000$ and $W_i=0\mathrm{.}08$ for $105,000-120,000x$