Which of the following taxpayers will report their rental income on Schedule C?

Jason has short-term rental units in his home and provides substantial personal services for all tenants.

Karen makes management decisions regarding her rental and participates in the activity for more than 500 hours.

Tom, a real estate professional, rents several single family homes without personal services provided and doesn't sell real estate in the ordinary course of business.

Levi turned his personal home into a rental after making some repairs and improvements.

karen is wrong answer. so please help me to choose the right one.