Emily lives 2 blocks west and 1 block south of the southwest corner of City Park. Her library is 1 block east and 2 blocks north of the northeast corner of City Park. On weekends she rides her bike on streets to the southwest corner of City Park, then takes a diagonal path through the park to the northeast corner, and then rides her bike on streets to the library. If her route is as short as possible, how many different routes can she take?
6
8
9
10
12
