What are the typical limits associated with APU (Auxiliary Power Unit) electrical and bleed air usage on an aircraft?
A) APU electrical power should not be used during flight, and bleed air usage is unlimited.
B) Both APU electrical power and bleed air have specific operational limits defined by the aircraft manufacturer.
C) APU electrical power is unlimited, but bleed air should not be used during takeoff and landing.
D) APU electrical power and bleed air can be used interchangeably without any specific limits.