Choose the correct alternative for the given relation.

Tractor : Trailer : : Horse : ?

Choose the correct alternative for the given relation.

Graphite : Diamond : Coke

Choose the correct alternative for the given relation.

Hillock : Mountain

Choose the correct alternative for the given relation.

Cool : Cold

Choose the correct alternative for the given relation.

Naphthalene : Coal tar : : Dyes : ?

Choose the correct alternative for the given relation.

Tanning : leather : : Pyrotechnics : ?