Kai correctly used the different laws of logarithms to rewrite log27 - log(3/5) -log 5 as one logarithm.
His work is shown here
Step one: Log27-(log3- log5) -log 5
Step two: log (3^3) -log 3+ log 5- log 5
Step three: log (3^3) - log3
Step 4: 3 log3- log 3
Step 5: 2 log 3
Step 6: log (3^2)
Step 7: log 9
In which step(s) did kai apply the difference law for logarithms
A- step 3
B- step 5
C- step 4
D- step 1