Willow solves the equation, 12 - p = 16 and gets that p = 4 What did she do wrong?

She added 12 to both sides.
She added 12 to both sides.

She did not divide both sides by 12.
She did not divide both sides by 12.

She did not multiply both sides by 12.
She did not multiply both sides by 12.

She did not divide both sides by -1.

She incorrectly subtracted 12 from both sides instead of adding 12 to both sides. This resulted in the incorrect answer of p = 4.