Text: No estimate of this is available but if the growth is high, the postal service loss for the program could be low, which would yield a discount larger than 4.5a.
Entailment: There's no estimate of this, but If the growth is high, the postal service loss could be low, which would give a discount bigger than 4.5a.
Contradiction: There is an estimate that if the growth is high, postal service loss for the program will be at a record high.