The Shivers bought 35 bundles of Shasta white shingles from Four Star Lumber Company on credit. Four Star was to retain possession of the shingles until the Shivers sent a check for the full amount. Another customer offered to pay cash for the same shingles and requested immediate delivery. Four Star sold the shingles to the second customer because a new shipment of shingles was expected to arrive the next day. If the Shivers pay for the shingles before the new shipment arrives, what legal action could they take against Four Star? Explainyour answer.