Match-Target — Reverse-Engineer the Employee Citation

You're a communications analyst given three columns of employee data: A (First), B (Last), C (Department). Column E (Target) shows the expected output string — the format your downstream HRIS requires for a directory export.

Inspect column E to derive the rule, then reproduce it in column D:

The shape: <First-Initial>. <Last-Name>, <Department> — first initial of the first name, period, space, full last name, comma, space, department.

Your task:

1. In column D (Your Output), write a single formula that combines LEFT (for the initial), the literal punctuation, and the source columns.
2. The formula must drag-fill from D2 → D13.

The grader checks column D; column E is your sanity-check.

Graded cells: D3 (Mark / Johnson / Marketing → M. Johnson, Marketing), D8 (Lisa / Wong / Marketing → L. Wong, Marketing), D11 (Robert / Kim / Operations → R. Kim, Operations).