3.Pan American Refineries, headquartered in Houston, must decide among three sites for the construction of a new oil processing center. The firm has selected the six factors listed below as a basis for evaluation and has assigned rating weights from 1 to 5 on each factor: FactorFactor nameWeight 1Proximity to the facilities5 2Power source availability3 3Workforce attitude4 4Distance to Houston downtown2 5Community desirability2 6Equipment suppliers in the area3 The CEO has rated each location for each factor on a 1- to 100-point basis. FactorLocation ALocation BLocation C 11008080 28070100 3306070 4108060 5906080 6506090 a)Which site will be recommended based on total weighted scores? b)If location B’s score for Proximity to port facilities was reset at 90, how would the result change? c)What score would location B need on Proximity to port facilities to change its ranking? PX