下列哪个URI写法符合RESTful 设计规范
A.http://api.example.restapi.org/blogs/mark-masse/entries/this_is_my_first_post
B.http://api.example.restapi.org/blogs/mark-masse/entries/this_is_my_first_post/
C.http://api.example.restapi.org/blogs/mark-masse/entries/this-is-my-first-post
D.http://api.example.restapi.org/blogs/mark-masse/entries/this-is-my-first-post/