Question 4 a) Using C language, write an initialization subroutine to set up INTI as falling- edge triggered and INT2 as rising-edge triggered interrupt inputs having high priorities. Explain how you can find the source of the interrupt when an interrupt occurs. Write the high priority interrupt subroutine (handler) that turns on the right LED (pin 1 on PORTA) when the interrupt initialized in (a) is coming from INTI and turns on the left LED (pin 3 on PORTA) when it comes from INT2. (10 points) (10 points) b)