The United States was twice involved in crises concerning Venezuela

Group of answer choices

a$.$ during its border dispute with French Guiana, and during the Venezuelan dispute with Great Britain and Germany over debts

b$.$ during its border dispute with British Guiana, and during the Venezuelan dispute with Great Britain and Germany over debts

c$.$ during its border dispute with British Guiana, and during the Venezuelan dispute with Columbia over debts

d$.$ when the U$.$S$.$ twice had to send troops to support the government of Venezuela against internal rebels