TSA 2012 · Question 7 · Logic
SaveKingsbury School Examination Schedule for the first week of June: [image of table] All exams take place in the school hall. All morning exams start at 9 am, all afternoon exams start at 2 pm. Each session (morning or afternoon) must have at least one male and one female invigilator. Each examination must be invigilated by one teacher of that subject. Each person can only invigilate once a day.
Of the male teachers, Ian teaches Economics and German, Mike teaches French and German, and Keith teaches French and Spanish. Of the female teachers, Marjorie teaches Maths and English, Susan teaches Spanish and Latin, and Jenny teaches English and History.

Who will invigilate on Wednesday afternoon?