Wanda works for an international company. She is the trainer for her company and often is required to go to other locations throughout the world to train other companies on new products and techniques, meaning she is often away from home for months. The company often has visitors from out of town who need a place to stay, so they rent Wanda's home for the visitors when Wanda is away on business. Below is a list of days on which Wanda was out of town. The company pays a fair rental value for Wanda's home. What percentage of the expenses for the home are related to rental use?

Wanda was out of town, and her house was rented to her company during the following dates:

January 14-May 21 (Assume this was not a leap year.) July 9-September 30 November 1-December 15

a) 100% b) 50% c) 70% d) 0%