Meghan is enrolled in the undergraduate Advanced Econometrics class at the Zicklin Sehoot of Business at Baruch College. Her class has been assigned a project that requires a time-sefies studies of historical trends of the economy of the United States of America. If Megan begins to collect her data today, which of tho following Variables woili most grotahly be the leen usefial to her? Average duration of unemployment. Change in consumer price index for services. Commereial and Industrial loans outstanding. Average prime rate charged by banks. Money Supply (M2) growth rate