Blood flows through a section of a horizontal artery that is partially blocked by a deposit along

Question:

Blood flows through a section of a horizontal artery that is partially blocked by a deposit along the artery wall. A hemoglobin molecule moves from the narrow region into the wider region. What happens to the pressure acting on the molecule?
(a) The pressure increases.
(b) The pressure decreases.
(c) There is no change in the pressure.