Answer:
B and C
Step-by-step explanation:
I think this is the answer hope this helps
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Reason:
log(80) - log(4)
log(80/4)
log(20)
The rule used is log(A) - log(B) = log(A/B)
Using a calculator,
which helps confirm the answer. The logs I used were base 10, but it could be any base really.