For any integer k greater than 1, the symbol k* denotes the product of all the fractions of the form ~$\frac{1}{t}$~, where t is an integer between 1 and k, inclusive.  What is the value of ~$\frac{5^{*}}{4^{*}}$~?

5

~$\frac{5}{4}$~

~$\frac{4}{5}$~

~$\frac{1}{4}$~

~$\frac{1}{5}$~