how can I multiply to get a product of 1 please help?

We need the multiplicative inverse of 3, which is
[tex]\frac{1}{3}[/tex]and the multiplicative inverse of 1/4,which is 4. Then, we have
[tex]\frac{3}{4}\times(\frac{1}{3})\times4=\frac{3}{4}\times\frac{4}{3}[/tex]since
[tex]\frac{3}{4}\times\frac{4}{3}=\frac{12}{12}=1[/tex]Then, the answer is option 2:
[tex]\frac{4}{3}[/tex]