Uncovered Interest Parity

CFA Level II Economics
#1

I do not get the difference between the below two choice, if someone can help;

The carry trade is profitable when:

  1. forward rates are biased estimators of future spot rates

  2. uncovered interest rate parity holds

Are not the two the same thing since uncovered parity assumes that the covered parity equation does not hold?

#2

Uncovered interest rate parity assumes that the parity equation _ holds _, which means that forward rates are _ unbiased _ estimators of future spot rates.