\(P(R\;B\;B)\;=\Large\frac{5}{8}\;x\;\frac{3}{7}x\frac{2}{6}\;=\frac{5}{56}\)

\(P(B\;R\;B)\;=\;\Large\frac{3}{8}\;x\;\frac{5}{7}\;x\;\frac{2}{6}\;=\;\frac{5}{56}\)

\(P(B\;B\;R)\;=\;\Large\frac{3}{8}\;x\;\frac{2}{7}\;x\;\frac{5}{7}\;=\;\frac{5}{56}\)

\((Exactly 1 Red)\;=\;\Large\frac{5}{56}\;+\;\frac{5}{56}\;+\;\frac{5}{56}\)

=\(\Large\frac{15}{56}\)

'C' option is correct