1. Design an If-Then statement (or a flowchart with a single alternative decision structure) that assigns 20 to the variable y and assigns 40 to the variable z if the variable x is greater than 100 . 2. Design an If-Then statement (or a flowchart with a single alternative decision structure) that assigns 0 to the variable b and assigns 1 to the variable c if the variable a is less than 10. 3. Design an If-Then-Else statement (or a flowchart with a dual alternative decision structure) that assigns 0 to the variable b if the variable a is less than 10. Otherwise, it should assign 99 to the variable b. 4. The following pseudocode contains several nested If-Then-Else statements. Unfortunately, it was written without proper alignment and indentation. Rewrite the code and use the proper conventions of alignment and indentation. If score