选择题
2013 AMC 8 Problem 21: City Park Routes
Samantha lives 2 blocks west and 1 block south of the southwest corner of City Park. Her school is 2 blocks east and 2 blocks north of the northeast corner of City Park. On school days she bikes on streets to the southwest corner of City Park, then takes a diagonal path through the park to the northeast corner, and then bikes on streets to school. If her route is as short as possible, how many different routes can she take?
2013 AMC 8 第 21 题：城市公园路线
Samantha 住在城市公园西南角以西 2 个街区和以南 1 个街区的地方。她的学校位于城市公园东北角以东 2 个街区、以北 2 个街区处。在上学的日子里，她在街道上骑自行车到城市公园的西南角，然后沿着对角线穿过公园到东北角，然后在街道上骑自行车去学校。如果她的路线尽可能短，她可以走多少条不同的路线
A.
3
B.
6
C.
9
D.
12
E.
18