Question 1 (10 pts.). Mark the following statements as true or false. A. In C++, there is no difference between a reserved word and a predefined identifier. B. The collating sequence of a character is its preset number in the character data set. C. Only one of the operands of the modulus operator needs to be of type int. D. In a mixed expression, all the operands are converted to floating-point numbers. E. If the input is 7 and x is a variable of type int, then the statement cin >>x; assigns the value 7 to x. F. Suppose a=5. After the statement ++a; executes, the value of a is still 5 because the value of the expression is not saved in another variable