The president of a company wants to conduct a survey to determine if employees would prefer to work from home on Fridays. Determine whether the results from the given survey methods will be valid or not valid. Survey Method Valid or Not Valid? Randomly poll 20 employees from an all-company meeting. Valid Not Valid Randomly poll 20 employees whose office is on the 2nd floor. Valid Not Valid Poll the first 20 employees who arrive at work. Valid Not Valid Poll every 5th employee who arrives at work. Valid Not Valid Poll all employees who stay in the office for lunch. Valid Not Valid