选择题
2014 AMC 8 Problem 11: Avoiding an Intersection
Jack wants to bike from his house to Jill's house, which is located three blocks east and two blocks north of Jack's house. After biking each block, Jack can continue either east or north, but he needs to avoid a dangerous intersection one block east and one block north of his house. In how many ways can he reach Jill's house by biking a total of five blocks?
2014 AMC 8 第11题 ：避免交叉路口
杰克想从他的房子骑自行车去吉尔的房子，吉尔的房子位于杰克的房子以东三个街区，以北两个街区。骑行每个街区后，杰克可以继续向东或向北行驶，但他需要避开一个危险的十字路口，即他家以东一个街区，以北一个街区。他骑自行车总共五个街区，有多少种方式可以到达Jill的家？
A.
4
B.
5
C.
6
D.
8
E.
10