JEE Main Chemistry question

Arrange and in increasing order of their ionic radii

• (A)Yb^{3+}<Pm^{3+}<Ce^{3+}<La^{3+}Correct
• (B)Ce^{3+}<Yb^{3+}<Pm^{3+}<La^{3+}
• (C)Yb^{3+}<Pm^{3+}<La^{3+}<Ce^{3+}
• (D)Pm^{3+}<La^{3+}<Ce^{3+}<Yb^{3+}