For the relations $R_1, R_2, R_3, R_4$ defined on the set $A = \{1,2,3\}$,

Match the LIST-I with LIST-II

LIST-I	LIST-II
A. $R_1 = \{(1,2),(2,1),(3,3)\}$	I. Transitive only
B. $R_2 = \{(1,1),(2,2),(3,3)\}$	II. Neither reflexive nor symmetric nor transitive
C. $R_3 = \{(1,2),(2,3),(1,3)\}$	III. Symmetric but neither reflexive nor transitive
D. $R_4 = \{(3,3),(3,1),(1,2)\}$	IV. Equivalence

Choose the correct answer from the options given below:

The number of equivalence relation on the set $\{1, 2, 3\}$ containing $(1, 2)$ and $(2, 1)$ is

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