QUESTION 5 2 points Save Answer What is the difference between "abc" and "ABC" in ANSI Forth? O a. They are both valid Forth words, but they refer to different things. b. The former is an ordinary Forth word; the latter is a special word. O c. The former is a valid Forth word, but the latter is not. O d. The latter is a valid Forth word, but the former is not. Oe. They are treated identically; they refer to the same thing, QUESTION 6 2 points Save Answer Suppose that the action of a Forth word is described by the following stack-effect notation. (a -- 2*a ) What would we expect this stack-effect notation to mean? O a. The word takes two parameters. The second parameter must be equal to 2 times the first. O b. The word takes one parameter, which must be an even integer. It returns one integer, whose value is half that of the parameter. O c. The word returns two values. The second value is 2 times the first value. O d. The word takes one parameter. It returns one value, which is 2 times the parameter. Oe. The word replaces every integer on the stack with an integer equal to 2 times the original. Of. It does not mean anything, as it is not legal Forth