Choose the correct sentence which is built from the words and phrases given:
Arabia’s rainfall / average only 2-5 inches a year / two-year droughts / not uncommon.
Arabia’s rainfall averages only 2-5 inches a year, and two-year droughts are not uncommon.
As Arabia’s rainfall averages only 2-5 inches a year, and two year droughts are not uncommon.
Arabia’s rainfall averages only 2-5 inches a year, which makes two year droughts are not uncommon.
Arabia’s rainfall averages only 2-5 inches a year, and however two year droughts are not uncommon.
Arabia’s rainfall averages only 2-5 inches a year, and two-year droughts are not uncommon.