Which statement correctly distinguishes thubūt from dalālah?

The Four Proofs: Fiqh, Uṣūl al-Fiqh and Kalām

• Thubūt is interpretation; dalālah is chain verification
• Both terms concern only transmitter reliability
• Once a source is established, its scope is always determined automatically
• Thubūt concerns establishment; dalālah concerns indication of meaning and ruling