Please help! (giving brainliest)

luca: [tex]5\cdot \frac{1}{3}=\frac{5\cdot \:1}{3} =\frac{5}{3}[/tex] 1 remainder 2
bailey: [tex]6\cdot \frac{4}{5}=\frac{6\cdot \:4}{5} =\frac{24}{5}[/tex] = 4 remainder 4
corin: [tex]3\frac{1}{4}\cdot \:2\frac{1}{3} =\frac{13}{4}\cdot \:2\frac{1}{3} =\frac{13}{4}\cdot \frac{7}{3} =\frac{13\cdot \:7}{4\cdot \:3} =\frac{91}{4\cdot \:3} =\frac{91}{12} =7\frac{7}{12}[/tex]
sabra: [tex]1\frac{4}{5}\cdot \frac{1}{2} =\frac{9}{5}\cdot \frac{1}{2} =\frac{9\cdot \:1}{5\cdot \:2} =\frac{9}{5\cdot \:2} =\frac{9}{10}[/tex] 0.9
So D. is the right answer.