In the JK partnership, Jacob's capital is $140,000, and Katy's is $40,000. They share income in a 3:2 ratio, respectively. They decide to admit Erin to the partnership. Each of the following questions is independent of the others.

Refer to the information provided above. What amount will Erin have to invest to give her a one-fourth interest in the capital of the partnership if no goodwill or bonus is recorded?
A. $45,000
B. $50,000
C. $60,000
D. $66,000