Joe Smith owns a book store as the sole proprietor. He is also a partner in a hotel, which borrowed $$100,000$ from the bank. Which of the following statements is true?

a$)$ Because of the concept of limited liability, he can lose only what he has invested in the hotel.

b$)$ The bank can look to the assets of thook store to pay off a debt.

c$)$ Although the bank can go after Smith's personal assets, they cannot go after the assets of the book store because the book store is a separate legal entity from Smith.

d$)$ The bank can only go after the assets of the book store if Smith was the actual person who negotiated the loan with the bank.