I / think / Lang Co Beach / beautiful / than / Nha Trang Beach.// A. I think Lang Co Beach is most beautiful than Nha Trang Beach.

I think Lang Co Beach is most beautiful than Nha Trang Beach.

I think Lang Co Beach is more beautiful than Nha Trang Beach.

I think Lang Co Beach is the more beautiful than Nha Trang Beach.

I think Lang Co Beach is beautiful than Nha Trang Beach.