Consider the Formulation Below

Multiple Choice

Consider the formulation below.How many decision variables will be there after the problem has been converted to a standard form?
MAX: ^{8 X}₁ ^{+ 4 X}₂
Subject to: ^{5 X}₁ ^{+ 5 X}₂ ^{≤ 20}
6 X₁ + 2 X₂ ≤ 18 X₁,X₂ ≥ 0

A) 4
B) 2
C) 3
D) 5