Which of the Following Is Considered a Quasi-Experimental Study? (Select

Which of the following is considered a quasi-experimental study? (Select all that apply.?

A) 28 volunteer patients who agree to trial a new type of mouthwash
B) 14 individuals on a medical unit who complete the same questionnaire
C) An experimental group and a control group each with 225 patients
D) Identification of oral flora in nursing home patients who receive artificial feedings
E) Tracking of pneumonia rates for all patients receiving artificial tube feedings