Question 1 Write a C function that returns true if an ASCII character is a letter, and false otherwise. The letters exist from 0x41 to 0x5A and from 0x61 to Ox7A inclusive. The prototype for this function is int bLetter(char data); Question 2 Write a C function to calculate the average of three numbers. Assume the three numbers are passed by value into your function. The prototype for this function is int32_t Average(int32_t n1, int32_t n2, int32_t n3)