A or B ( are my best choices) hope that helped:))
Your answer is next year in February
Answer:
Lesion Sterilization and Tissue Repair
Technology, IT etc (4) LSTR — Lesion Sterilization and Tissue Repair. LSTR — Listener Sidetone Rating. LSTR — Listener Side Tone Rating. LSTR — Lesion Sterilization and Tissue Regeneration.
Explanation: