How were slaves in sparta different from slaves in athens?

slaves in sparta were owned by private citizens, whereas in athens they were owned by the state.
slaves in sparta were owned by the state, whereas in athens they were owned by private citizens.
slaves in sparta were of a higher social class than slaves in athens were.
slaves in sparta were allowed to own property, while slaves in athens were not.

Interest groups representing businesses and investors are often among the most successful lobbying groups for all of the following reasons, except a. such groups have the financial resources to mount sustained campaigns on their own behalf b. these groups' members contribute heavily to many legislators' campaigns and in so doing gain greater access to legislators c. these groups have often been in existence for decades, allowing them to both master the legislative system and develop close ties with legislators d. the members of these groups make up the majority of voters in many districts