Jamal has a utility function Ub (X_1, X₂) = (X₁+ 2) x (X₂ +3). He also has income m, and faces P₁ and P₂ for goods 1 and 2 respectively.

What is Jamal's budget constraint?

a. P₁X₁+ P₂X₂ = m

b. (P₁ + P₂) (X₁ + X₂) = m

c. P₁ + P₂ = m

d. P₁X₁ + P₂X₂ + m = 0

e. none of these.