This is assembly mips program ask to complete the function and follow the output instructions. please complete copyLetters function in mips code and you can use any main function to test.

B. int copyLetters (String src, String dst, int maxlen) This function copies ONLY the alphabetical characters (upper and lowercase) from src to dst. dst must be null-terminated. maxlen represents the number of bytes available in dst to copy into, including the null-terminator. . Function parameter and return value summary: src: starting address of null-terminated ASCII character string that is to be copied dst: starting address of space to copy the letters into maxlen: integer value representing the length number of characters that can be copied, including the null terminator returns: length of dest string (not including null-terminator) upon success, -1 if error Return -1 for error in the following cases: maxlen