CIT100 Programming Language Concepts Quiz 2 Your Name: 14. The following is part of a switch block. Cirele the correct code switch (userinput.ToUpper) Il userlnput is a declared string variable a. caseR b. case R: c. case (aletter=-"R"): d. case "R 15. The following is part of a switch block. Explain why there is no code for case"A" case "A": case "B": ibl Display Text = "How are you?" break; 16. In a switch block, certain cases use the key word "break" because the programmer wants this to happen Other cases use the key word "return" because the programmer wants this to happen: 17. How do you manually add a list of college names to a ComboBox to be displayed? (Explain which property you should go and what you should do then.)