Which of the following is incorrect? A. int x = 9; B. long x = 9; C. float x = 1.0; D. double x = 1.0; C The expression 4 + 20 / (3 - 1) * 2 is evaluated to A. 4 B. 20 C. 24 D. 9 E. 25 C The System.currentTimeMillis() returns ___ . A. the current tim...