(d) backslash () 4. Which of the following statement about comments is false? (a) Comments begin and end with /* and "%, respectively. (b) Programmers insert comments to document programs and improve program readability (c) Comments do not cause any machine language object code to be generated. (d) Lengthy comments can cause poor execution-time performance, 5. Which of the following will not increase variable c by one? (a) C + 1; (b) C++; (c) ++C; (d) C+= 1; de should be included in every C program