Write log6 5 as a logarithm of base 4.
a)log base 4 of 5 over log base 4 of 6
b) log base 4 of 6 over log base 4 of 5
c)log base 5 of 4 over log base 6 of 4
d)log base 6 of 4 over log base 5 of 4