What Is the Constraint for Node 2 in the Following $\le$

question 42

Multiple Choice

What is the constraint for node 2 in the following maximal flow problem?

• A)X₁₂ -X₂₃ -X₂₄ = 0
• B)X₁₂ + X₂₃ + X₂₄ = 0
• C)X₁₂ \(\le\) 4
• D)X₁₂ + X₁₃ - X₂₃ = 0

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Definitions:

Canthi

The corners where the upper and lower eyelids meet, divided into medial and lateral canthi.

Eyelids

Foldable covers of skin that protect and moisturize the eyes while also controlling the amount of light that enters them.

Inner Surface

Refers to the inside or interior face of a structure or object.

Palpebral Fissure

The elliptical open space between the eyelids of an open eye.