Answer the following questions according to the ERD of the Airport system: AIRPORT FLIGHT FLIGHTNUM AIRPORTCODE FK AIRPORT1 CUSTOMER AIRPOR NAME CITY DTIME CUSTOMERNUM DDATE STATE ATIME FIRSTNAME...

Answer the following questions according to the ERD of the Airport system:

Extracted text: Answer the following questions according to the ERD of the Airport system: AIRPORT FLIGHT FLIGHTNUM AIRPORTCODE FK AIRPORT1 CUSTOMER AIRPOR NAME CITY DTIME CUSTOMERNUM DDATE STATE ATIME FIRSTNAME ADATE MIDDLENAME DESTINATIONAIRPORT LASTNAME PRICE STREETNUMBER AIRPLANENUM(FK) AIRPORTCODE(FK) STREETNAME CITY FK_AIRPORT STATE PHONE FK AIRPLANE FK_FLIGHT FK_CUSTOMER AIRPLANE PAYMENT AIRPLANENUM FLIGHTNUM(FK) AIRPLANENAME CUSTOMERNUM(FK) САРАСITY CREDITCARDTYPE AIRPORTCODE(FK) CREDITCARDNUM BOOKDATE HOLDDATE EXPIREDHOLDDATE How many primary key in the Flight entity? А. 4 How many tables in the system can Customer table retrieve В. 1 data from? C.5 How many attributes in the Airport Table? D.5 How many tables in the system? E. 5 How many relationships shown in the system?