There is a relationship between tables T1 and T2, and the columns involved are T1.A and T2.B. From the data shown, what is the relationship type (1:1, 1:M, and M:M) between T1 and T2? Explain. (up to 4 lines) And which side is the Primary Key, and which side is the Foreign Key in this relationship? (up to 4 lines).