Why Did Theodore Roosevelt Worry That There Could Be a European

Why did Theodore Roosevelt worry that there could be a European invasion of the Caribbean during his presidency?

A) Since colonies in Asia and Africa were hard to maintain, European nations were seeking new territories.
B) France and Germany were anxious to establish control over the Panama Canal.
C) European nations had a strong interest in establishing markets for their goods in the Caribbean.
D) Countries like the Dominican Republic and Venezuela were indebted to European nations.