The correct answer is "Not liable, because it is not a common carrier and the parties to a contract, as such, may enter into a stipulation exempting the owner from liability for the negligence of its agents." The explanation for this is that the carrier in this case, X Shipping Lines, is not considered a common carrier. As a result, they are not subject to the same level of liability as common carriers. Additionally, the owner and shipper agreed on a stipulation that exempted the owner from liability for the negligence of its agents. This stipulation is valid and enforceable under the contract between the parties. Therefore, the carrier is not liable for the shortages in the delivered cargo.