A World Bank arbitration tribunal ordered Venezuela to pay Exxon Mobil Corp around $$1\mathrm{.}6$ billion to compensate for the $2007$ nationalization of its oil projects in the country. The amount is far below the up to $$10$ billion that Exxon had originally sought. Which political risk did Exxon experience?

A$.$ sequestration

B$.$ expropriation

C$.$ confiscation

D$.$ appropriation