What is the term for the phenomenon in Thai where consonants at the end of a syllable are limited to a set of eight possible sounds?

• A Final consonant restriction ✓
• B Consonant cluster reduction
• C Coda neutralisation
• D Syllable-final lenition

Standard Thai restricts syllable-final consonants to only eight possible sounds (k, t, p, ng, n, m, y, w) regardless of the consonant letter used, a process called coda neutralisation.