He (a)/ will return (b)/ on either Monday or Tuesday.(c)/ No errror (d)

Five people P, Q, R, S and T visit an office on certain days of a week. They work as a plumber, carpenter, cook, electrician and doctor in random order. A person pursues only one profession and visits the office only one day in the week. The plumber visits office every Monday. . P is an electrician who comes neither on Tuesday nor Thursday. T is a carpenter and R is not plumber. The person who visits the office on Thursday is not a doctor. S works on a Tuesday and T works on the following day. Which is the right combination? A. Monday - Electrician B. Thursday - Cook C. Tuesday - Carpenter D. Friday - Doctor