Alex Johnson was classified as an achievement oriented leader by his team. Which of the following would describe Johnson's leadership style best?

A、He lets subordinates know what's expected of them, schedules work to be done, and gives specific guidance on how to accomplish tasks.;

B、He shows concern for the needs of his subordinates and is friendly.;

C、He sets challenging goals and expects subordinates to perform at their highest level.;

D、He consults with subordinates and uses their suggestions before making a decision.