If all equipment has a termination temperature rating of 90C, what size of TW75 Aluminum conductor is required for the neutral of a feeder that supplies a 3 4-wire panelboard with a maximum unbalanced load of 493 A including 113 A of electric discharge lighting and 55 A of computer equipment? Question 4 options: A) 700 kcmil B) 1250 kcmil C) 1000 kcmil D) 900 kcmil