In the following question, two columns are given, containing three phrases each. A phrase from the first column may or may not connect with a phrase from the second column to make a grammatically and contextually correct sentence. There are four options, three of which display the sequence(s) in which the phrases can be joined to form a correct sentence. If none of the phrases joined together can make a correct sentence, mark ‘None of these’ as your answer. 

Column 1	Column 2
A. To make it in urban areas, birds tend to be either large-brained	D. most birds' brains are of average size.
B. In natural habitats,	E. and able to produce few offspring or small-brained and extremely fertile.
C. As long as humans have been building cities,	F. wildlife has been fleeing from them.