$73.$ Which of the following sets of pages are currently in the main memory?$$a$.0,1,3,$ and $2$b$.0,1,2,$ and $3$c$.1,3,4,$ and $5$d$.1,2,0,$ and $374.$ Which of the following sequence of page requests will NOT result in page fault?$$a$.4,6$b$.2,6$c$.3,4$d$.1,4$