14. (12 points) From a large grid paper, cut out 5 connected squares (two squares that only share one vertex are not considered connected), so that the cut-out shape can be folded into an open-top cube. The total number of different shapes that can be cut out (shapes that are the same after rotation or flipping are considered the same) is ( ).
A. 8
B. 9
C. 10
D. 11
【Answer】Solution: According to the problem, the cut-out shapes are as shown in the figure: there are 8 types in total.

Therefore, the correct choice is: A.