(c) Identify the variable below is a quantitative or qualitative variable. (i) Percent of body fat (1 mark) (ii) Favorite football team (1 mark) (iii) Time spent in buying groceries every week (1 mark) (d) (i) In a computer maze game, there are 3 tunnels leading from point A to point B and 5 tunnels leading from point B to point C. Calculate the number of routes a rat can take to move from point A to point C via point B. (2 marks) (ii) Find the number of different ways so that all the letters in the word "OPTICAL" can be arranged without repetition such that the vowels always come together. (3 marks) (iii) Find the number of different ways to form a 4-digit even number from 4, 5, 6, 7, 8 without repetition. (3 marks) (iv) In an exam paper, Amy needs to answer 4 questions from section A which consists of 5 questions, 2 questions from section B which consists of 4 questions and 1 question from section C which consists of 2 questions. Calculate the number of different ways Amy can choose her questions. (4 marks)