While staying in buenos aires, argentina, you decide to take a trip to three other cities: tucuman, bahia blanca, and salta. the following table shows the costs associated with traveling to or from each of these four cities. all costs listed are given in argentine pesos ($).

origin and destination
cost ($)
buenos aires to tucuman
211
buenos aires to bahia blanca
268
buenos aires to salta
238
tucuman to buenos aires
272
tucuman to bahia blanca
195
tucuman to salta
203
bahia blanca to buenos aires
200
bahia blanca to tucuman
229
bahia blanca to salta
211
salta to buenos aires
193
salta to tucuman
267
salta to bahia blanca
275

using the information in the table, determine the least expensive way to visit all of these cities, starting and ending in buenos aires.
a.
buenos aires 2007-14-01-00-00_files/i022.jpg salta 2007-14-01-00-00_files/i0220001.jpg bahia blanca 2007-14-01-00-00_files/i0220002.jpg tucuman 2007-14-01-00-00_files/i0220003.jpg buenos aires
b.
buenos aires 2007-14-01-00-00_files/i0220004.jpg tucuman 2007-14-01-00-00_files/i0220005.jpg salta 2007-14-01-00-00_files/i0220006.jpg bahia blanca 2007-14-01-00-00_files/i0220007.jpg buenos aires
c.
buenos aires 2007-14-01-00-00_files/i0220008.jpg tucuman 2007-14-01-00-00_files/i0220009.jpg bahia blanca 2007-14-01-00-00_files/i0220010.jpg salta 2007-14-01-00-00_files/i0220011.jpg buenos aires
d.
buenos aires 2007-14-01-00-00_files/i0220012.jpg bahia blanca 2007-14-01-00-00_files/i0220013.jpg tucuman 2007-14-01-00-00_files/i0220014.jpg salta 2007-14-01-00-00_files/i0220015.jpg buenos aires