Consider the below statements and identify the correct answer.
Statement I: Lithium, Sodium, and Rubidium are elements of Dobereiner's triad.
Statement II: In triads, the atomic mass of the middle element was roughly the average of the atomic masses of the other two elements.
1
Statement I is correct, Statement II is incorrect.
2
Statement II is correct, Statement I is incorrect.
3
Both statements are incorrect.
4
Both statements are correct.