……….INSTRUCTED ME HOW TO MAKE A GOOD PREPARATION FOR A JOB INTERVIE...

6. ……….instructed me how to make a good preparation for a job interview.

A. John Robbins, to that I spoke on the telephone , B. John Robbins, that I spoke to on the telephone ,

C. John Robbins, I spoke to on the telephone, D. John Robbins, who I spoke to on the telephone,