Cara Marie M. answered 04/08/19
Math Major, Pursing PhD in Math, with 10+ Years of Teaching Experience
Hey there,
50% of the exam is calculus and you managed to find the 3 most complete calculus texts. I personally have found that the exam is mostly computational (so do every problem in Stewart!). However, the exam also tests the basic assumptions underlying the major theorems in calculus, which is where Rudin comes in handy. I don't think you need Apostol (but I have a pdf copy if you're interested). I would tend to do extra practice with Simmon's text, which has some more abstract and difficult problems than the ones in Stewart, but are still largely computational.
Hope this helps!