I have a doubt regarding entropy.
According to second law Entropy of universe is continuously increasing.
So at the start of Big-Bang entropy should be zero.

Also temp. Of universe is continuously decreasing because it is expanding continuously.
So at start of Big-Bang temp. Should be maximum.

So finally, At start of big-bang
Temp should maximum
& entropy should zero.

But according to 3rd law
Entropy is zero @ abaolute zero temp...

What is this matter?