Read the following information carefully and answer the questions which follow:
(i) 'P ÷ Q' means 'P is son of Q'.
(ii) 'P × Q' means 'P is sister of Q'.
(iii) 'P + Q' means 'P is brother of Q'.
(iv) 'P – Q' means 'P is mother of Q'.
Which of the following means that 'S is the husband of T'?