A back-to-back stem-and-leaf plot compares two data sets by using the same stems for each data set. Leaves for the first data set are on one side while leaves for the second data set are on the other side. The back-to-back stem-and-leaf plot available below shows the salaries (in thousands) of all lawyers at two small law firms. Complete parts (a) and (b) below. Click the icon to view the back-to-back stem-and-leaf plot. (a) What are the lowest and highest salaries at Law Firm A? at Law Firm B? How many lawyers are in each firm? At Law Firm A the lowest salary was $ ] and the highest salary was s At Law Firm B the lowest salary was $ ] and the highest salary was $]