Required: Which of the following charts would be appropriate to geographically visualize the concentration by number of customers. (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer. Any boxes left with a question mark will be automatically graded as incorrect.) Connection Map Dot Map Choropleth Map Flow Map Bubble Map Tree Map Heat Map