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A space probe is traveling in outer space with a momentum that has a magnitude of \( 7.5 \times 10^{7} \mathrm{~kg} \cdot \mathrm{m} / \mathrm{s} \). A retrorocket is fired to slow down the probe. It applies a force to the probe that has a magnitude of \( 2.0 \times 10^{6} \mathrm{~N} \) and a direction opposite to the probe's motion. It fires for a period of \( 12 \mathrm{~s} \). Determine the momentum of the probe after the retrorocket ceases to fire.
(A) \( +5.1 \times 10^{7} \mathrm{~kg} \cdot \mathrm{m} / \mathrm{s} \)
(B) \( +2.4 \times 10^{7} \mathrm{~kg} \cdot \mathrm{m} / \mathrm{s} \)
(C) \( +7.5 \times 10^{7} \mathrm{~kg} \cdot \mathrm{m} / \mathrm{s} \)
(D) \( +9.9 \times 10^{7} \mathrm{~kg} \cdot \mathrm{m} / \mathrm{s} \)
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