Anzelmo Corporation Invested in Jones Manufacturing by Purchasing a 10

Anzelmo Corporation invested in Jones Manufacturing by purchasing a 10% interest in the company. Anzelmo had no significant influence in Jones. Over time, Anzelmo acquired more shares in Jones, and in 2019, Anzelmo's president became a member of the board of directors when its ownership interest reached 30% of Jones. This change is ________.

A) an accounting principle change requiring retrospective adjustment
B) an accounting principle change requiring prospective adjustment
C) a correction of an error
D) a change in estimate