The file P18_12.txt contains yearly data for the number of licensed drivers (those under 18, those over85, and total) by gender and state. Import this data into Excel and save it as an Excel (.xlsx) file. Useappropriate text functions (unless you want to do it manually) to shorten the variable names to something like Arizona Females Young, Arizona Females Old, and Arizona Females All. Explain briefly what the presence of consecutive commas in the text files indicates. How are these imported into Excel?