— How did you find your sister in such a big and strange city?

— I ____ her in the railway station when I was looking for the police for help. [ ]

A. came about

B. came out

C. came up

D. came across

室内设计的含义是综合的室内环境设计，包括视觉环境和工程技术方面的问题，以及物理环境、意境等心理环境和文化内涵等内容。