"A" delivers to "B", common carrier, a machine to be delivered without delay to "A"'s factory. "B" unreasonably delays the delivery of machine and "A" in consequence loses a profitable contract with…

"A" delivers to "B", common carrier, a machine to be delivered without delay to "A"'s factory. "B" unreasonably delays the delivery of machine and "A" in consequence loses a profitable contract with the government. In such case, to what extent "A" can claim compensation? Give your legal opinion.