If I₁ Goes to the Right Through R₁,I₂ Goes to the Right

Multiple Choice

If I₁ goes to the right through R₁,I₂ goes to the right through R₂,and I₃ goes to the right through R₃,what is the resulting equation resulting from applying Kirchhoff's junction rule at point b?

A) I₁ + I₂ + I₃ = 0
B) I₁ + I₂ - I₃ = 0
C) I₁ - I₂ + I₃ = 0
D) I₁ - I₂ - I₃ = 0