George Has a Business Idea and He Is Expecting to Get

George has a business idea and he is expecting to get support from his family and friends to get funding for his business. His grandmother loves him very much and George is hoping that his grandmother would help him finance his dream. However, when he approaches his grandmother, she refuses to help him. Which of the following statement STRENGTHENS the argument that his grandmother took a right decision?

A) George and his grandmother mutually accepted the payback strategy
B) George offers his grandmother a written formal agreement to which she agreed
C) George has asked for the minimum amount that his grandmother could easily give
D) George is unwilling to invest his own savings