The submission gets a score of 0 for the Phase 1 portion of the dataset, despite receiving a valid score for the Phase 2 portion.

We have verified that the data format, column headers, and answer in \boxed{} are consistent across both phases in the submitted sheet.

Examples of Phase 1 answers: \boxed{C4}, \boxed{C2}, \boxed{C3}

Examples of Phase 2 answers: \boxed{3}, \boxed{R1}, \boxed{G}

Could you please clarify if there are different formatting requirements for Phase 1.