DSC3704 : Five options, A, B, C, D, E, are compared under the four criteria, C1, C2, C3, C4. The first, third and fourth criteria have the same importance, but the second criterion is twice as important as each of the others. The preference vectors are v1 = 0,15 0,22 0,17 0,23 0,23 v2 = 0,14 0,30 0,15 0,27 0,14 v3 = 0,18 0,24 0,20 0,28 0,10 v4 = 0,20 0,21 0,15 0,28 0,16 . 4.1 Do the preference vectors satisfy the conditions for being weights vectors? What are these conditions