You are screen sharing Stop few rows shown): player, team, position, college, salary Al Horford, BOS, C, University of Florida, 26540100 Amir Johnson, BOS, PF, , 1. 20E+07 Avery Bradley, BOS, SG, University of Texas at Austin, 8269663 Demetrius Jackson, BOS , PG, University of Notre Dame, 1450000 Gerald Green, BOS, SF, , 1410598 Isaiah Thomas, BOS, PG, University of Washington, 6587132 Jae Crowder , BOS, SF , Marquette University, 6286408 James Young, BOS, SG, University of Kentucky, 1825200 Jaylen Brown, BOS, SF , University of California, 4743000 For each of the following parts, indicate Valid or Invalid if the given command isolates the column of colleges and redirect them to a file colleges.txt. a) [ Select ] trim -f 4 -d ", " nba2018. csv > colleges. txt b) [ Select ] cut -f 4 -d ", " nba2018. csv > colleges. txt C) [ Select ] cut -f 4 -d ", " nba2018. csv | colleges. txt d) [ Select ] cut -f 4 -d d ", " nba2018. csv >> colleges . txt