Explain Whether Each of the Following Transactions Would Be Accounted

Explain whether each of the following transactions would be accounted for as a change in accounting policy, change in accounting estimate or as an error correction. Assume that the entity reports its financial results in accordance with ASPE and all transactions are material.
$$\begin{array} {| l | l | } \hline \text { Transaction } & \text { Appropriate accounting } \\\hline \text { During the audit of the } 2021 \text { fiscal year, } \\\text { the auditors learned that Soorya Mining } \\\text { Inc. should have had used an average } \\\text { price of } \$ 850 / 0 z \text {. for its fiscal } 2021 \\\text { reporting, not } \$ 840 / 0 z \text {. } & \\\hline \text { During the audit of the } 2021 \text { fiscal year, } \\\text { the auditors learned that Everlast } \\\text { Construction used the cost recovery } \\\text { method to account for its long-term } \\\text { contracts as it could not reasonable } \\\text { estimate the outcome of its performance } \\\text { obligations. Everlast has since improved } \\\text { its estimating capabilities and has } \\\text { adopted the percentage of completion } \\\text { method. } \\\begin{array} { l } \hline \text { During the audit of the } 2021 \text { fiscal year, } \\\text { the auditors learned that Everlast } \\\text { Construction previously used the } \\\text { completed contract method. During the } \\\text { year Everlast adopted the percentage of } \\\text { completion method. }\end{array} \\\hline\end{array}$$