Read the following context and choose the best option to answer the question.
Context: She set the folder aside , clasping her hands in front of her , calling for her visitor to come in . Silver hair and an easy grin entered her office , drawing a smile to her face as well . Bill Buchanan closed the door behind him , crossing the floor and plunking down into the chair in front of her desk . " Hi , " she greeted . Bill grinned . " Hey there .
Question: What is known about Bill Buchanan ?
Options: 
- Bill Buchanan allergic to bees .
 - None of the above choices .
 - Bill Buchanan is unsure of himself .
 - Bill Buchanan has an easy smile .


Bill Buchanan has an easy smile .