Multiple choice Data was collected from 25 respondents to determine the monthly expenditure on groceries. The stem-and-leaf display of the data is shown below. stem unit: $100 leaf unit: $10 46 2 1246 3 0 1346 6 6 4 23 3 4 5 7 8 9 5 345 6 12 What proportion of the respondents spent $400 or above? Select one: O a. 0.44 O b. 0.46 O c. 0.48 O d. 0.52