Which statement is incorrect?
选项：

A: The pitot-static system is a combined system that utilizes the static air pressure and the dynamic pressure.
B: The altimeter must be adjusted to match the given altimeter setting as the flight progresses from one station to the next.
C: The airspeed indicator is calibrated in miles per hour or feet per minute.
D: The rate of climb or descent is indicated on the vertical speed indicator is indicated in feet per minute.