6.
In the above figure, Reggie's budget line rotates outward from $BL_1$ to $BL_2$. He initially consumes at point A. If his new consumption bundle is at point C, this implies that his demand curve for kiwi fruit ______.
(A) slopes downward.
(B) is a horizontal line.
(C) is a vertical line.
(D) has shifted.

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