In a survey of people who grew tomatoes, they were asked to give the height of their largest tomato plant in centimetres. The data is as follows: [0, 10) 2 people [10, 20) 6 people [20, 30) 12 people. [30, 40) 8 people [40 50) 4 people a) Make a relative frequency distribution table of the sizes of plants. (4 marks) b) Make a cumulative relative frequency distribution table of the sizes of plants. (4 marks) c) Make a histogram of the data. (4 marks)