When You Need to Revise a Long,complex Document

When you need to revise a long,complex document,

A) start the process as soon as you've finished your first draft.
B) start by focusing on misspelled words and grammar errors.
C) save time by multitasking while you're revising the document.
D) try to put your draft aside for a couple of days before you start.
E) start by looking for sentence level issues,such as grammar and spelling.