Int num1, num2, newNum: double x, y: Which of die following assignments are valid? If an assignment is not valid, state the reason. a. num1 - 35: b. newNum = num1 - num2: c. num1 = 5: num2 = 2 + num1: num1 = num2/3: d. num1 * num2 = newNum: e. x = 12 * num1 - 15 3: f. num1 * 2 = newNum + num2: g. x/y = x * y: h. num2 = num1 % 2.0: i. newNum = satatic_caat (x) % 5: j. x = x + y - 5: k. newNum = num1 + static_cast (4.6/2): Write C++ statement(s) that accomplish the following: a. Declare int variables x and y. Initialize x to 25 and y to 18. b. Declare and initialize an int variable temp to 10 and a char variable ch to 'A'. c. Update the value of an int variable x by adding 5 to it. d. Declare and initialize a double variable payRate to 12.50. e. Copy the value of an int variable firstNum into an int variable tempNum. f. Swap the contents of the int variables x and y. (Declare additional variables, if necessary.) g. Suppose x and y are double variables. Output the contents of x, y, and the expression x + 12/y - 18. h. Declare a char variable grade and set the value of grado to 'A'. i. Declare int variables to store four integers. j. Copy the value of a double variable z to the nearest integer into an int variable x