The following are all valid variable names: (Ignore the fact they are not very descriptive) m1356, t5, t_5, Her_Sales, AccountsTotal, a, b, c True False Question 2 (1 point) Choose the variable names that ARE valid. Radius_1 radius_1 Radius#1 1_radius Question 3 (1 point) Saved What prints when the following code is executed? (Assuming it is properly nested in function main. int variable1 = 11.2; printf("variable 1 = %d", variable1); = O 11 O 11.2 O variable1 = 11.2 = variable 1 = 11 = Question 4 (1 point) Saved If I declare and initialize the following: int Pl = 3.1415; = I can change the value of PI later in main if I want to. True False What prints when the following code is executed? (Assuming it is properly nested in function main. float variable1 = 11.2: = printf("variable1 = %f", variable1); = () 11 O 11.2 variable1 = 11.2 = O variable1 = 11