Fall 2 (4). Consider the Pascal/Ada-like "block-structured" program at main block the right. Suppose that the program contains no declarations. Suppose further that a variable named X is declared in the main block, in procedure D, and in procedure F, but nowhere else. Finally, suppose a variable named X is accessed (but sot deproc B clared locally, and not listed as a formal parameter) in procedure E var X... (a). Assuming statie (lexical) scoping (as is the case in Pascal and Ada), which version of X will be used within E? (3) proc D var X... ar X (b). Assuming dynamic scoping, give a call sequence starting from "main" and terminating with E, in which the version of X used within E will be F's version. (e. Asmuming Pascal/Ada's scivaion rules, what procedures can the main prognam blodk (d). What (e). What (0. What procedures can procedure A invoke