An agency receives people to work in the agency from Monday to Friday. One clerk is arranged for the morning reception and the other clerk is arranged for the afternoon reception. The agency has five clerks R, S, T, U and V. It is based on the following conditions: (1) each clerk is arranged for reception work at least once a week; (2) a clerk cannot be arranged for reception work for two consecutive days in the same week; (3) T is never Arranged to do reception work in the morning; (4) V does reception work on Monday and Wednesday afternoons; (5) U never does reception work on the same day as S. For one week, T is arranged to do reception work only on Fridays. So which of the following must be correct? ['R doing reception work on Tuesday.', 'R doing reception work in early three.', 'R doing reception work on Friday.', 'U doing reception on Thursday.']