Algorithm Workbench 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 band assigns 1 to the variable c if the vari able 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