Variable 1 Is to Be Predicted from a Combination of Variable

Variable 1 is to be predicted from a combination of variable 2 and one of variables 3, 4, 5, and 6. The correlations of importance are as follows:
R₁₃ = .3; r₂₃ = .9
R₁₄ = .4; r₂₄ = .2
R₁₅ = .6; r₂₅ = .8
R₁₆ = .7; r₂₆ = .1
Which of the following multiple correlation coefficients will have the smallest value?

A) r_1.23
B) r_1.24
C) r_1.25
D) r_1.26