Which what-if analysis tool is best to determine the number of t-shirts to sell in order to earn $500 with no constraints?

If the line:

friend class A; appears in class B, and the line: friend class B; appears in class C, then: a. Class A is a friend of class C. b. Class A can access private variables of class B. c. Class C can call class A’s private member functions. d. Class B can access class A’s private variables.

The values of foo and bar are:

``` String line1 = new String("c = 1 + 2 + 3") ; StringTokenizer tok = new StringTokenizer(line1, "+="); String foo = tok.nextToken(); String bar = tok.nextToken(); ``` a. foo is “c ”, bar is “ = ”. b. foo is “c”, bar is “ ”. c. foo is “ = ”, bar is “ + ”. d. foo is “c ”, bar is “ 1 ”.