At an Electronic Data Processing Unit, five out of the eight program sets P, Q, R, S, T, U, V and W are to be operated daily. On any one day, except for the first day of a month, only three of the program sets must be the ones that were operated on the previous day. The program operating must also satisfy the following conditions : (i). If program P is to be operated on a day, V cannot be operated on that day. (ii). If Q is to be operated on a day, T must be one of the programs to be operated after Q. (iii). If R is to be operated on a day, V must be one of the programs to be operated after R. (iv). The last program to be operated on any day must be either S or U.
If R is operated at third place in a sequence, which of the following cannot be the second program in that sequence ?