A student project has involved a survey about the spending habits of students in a college. (a) Below is the extract of the first few questions in the questionnaire. Define the type of variable (Numerical Discrete / Numerical Continuous / Categorical Nominal / Categorical Ordinal) for each of the variables: QI: Your studying program Circle your answer: Business / Engineering / Arts / Science) QII: Traveling time from home to college on 20 February 2022 (in minutes): QIII: Total spending on meal (breakfast + lunch + dinner) on 20 February 2022 (Circle your answer: Below $40 / $40 - less than $80 / $80 - less than $120 / $120 or above) QIV: Number of T-shirts you've bought in January 2022: A student in the team suggested the following sampling procedure: "We target to interview 40 students. As all college students (1000 students) will attend college assembly on every Monday morning at 9 am, let's arrange our interview at the College Entrance (there is only one entrance at the College) from 8 am, the time that the school entrance opens on the coming Monday. We can invite student as interviewee for every fixed number student entering the college." (b) What is the name this sampling method? (c) Find the fixed number mentioned by this student. (d) If, by using a random number generator, the 12th student entering the college should be the first interviewee. Write down who should be the second, the third and the sixth interviewees