How Did Most Eastern Middle-Class Americans Regard the Western Migration

How did most eastern middle-class Americans regard the western migration of many Americans?

A) With delight to be rid of those who no longer wanted to live in the East.
B) With emotions that differed in the North and South, depending on the development of slave or free states in the West.
C) With happiness for the development of new markets to exploit.
D) With alarm, fearing the departure of ambitious citizens.