Lexical semantics studies word meaning. Regarding synonyms and antonyms in English, mark T for true statements and F for false ones:

(__) Synonyms are words that have identical meanings in all contexts and can be freely substituted without any change in meaning or nuance (e.g., "big" and "large").

(__) Antonyms are words that express opposite meanings (e.g., "hot" and "cold," "happy" and "sad").

(__) Many words considered synonyms actually have subtle differences in meaning, connotation, or register (formal/informal), which makes lexical choice important for communicative precision.

(__) The word "fast" can be considered both a synonym of "quick" and an antonym of "slow."

After analysis, select the alternative that presents the correct sequence, from top to bottom: