Which choice is correctly punctuated?

It is difficult to find genealogical records: in some countries.
Sometimes records get lost; due to language.
Research can be done in most countries: however, language can be a barrier.
Other records may have been lost; language is often a barrier.

Question

Which choice is correctly punctuated?
 	
	It is difficult to find genealogical records: in some countries.
	Sometimes records get lost; due to language.
	Research can be done in most countries: however, language can be a barrier.
	Other records may have been lost; language is often a barrier.

anonymous · Answer

Research can be done in most countries: however, language can be a barrier.