For the following relative frequency table:$$OPINION$$ RELATIVE FREQUENCYStrongly Agree$0\mathrm{.}310$Agree$0\mathrm{.}260$Disagree$($Blank$)$Strongly Disagree$0\mathrm{.}075$No Opinion$0\mathrm{.}170$Q$8.$ Fill in the missing value for the following relative frequency distribution.a$.0\mathrm{.}080$b$.0\mathrm{.}185$c$.0\mathrm{.}241$d$.0\mathrm{.}410$e$.$ None