Not every claim about a passage has equal evidential strength. Some features are grammatically observable, some are strongly supported by context, and some are only optional literary interpretations.
Clear syntactic fact: “iyyāka” is a fronted object.
Strong contextual meaning: the restriction of worship to God.
Unsupported addition: inventing a pun or antithesis in the same clause.
A well-ordered exam response starts with what can be shown directly, then explains the effect, and finally marks any plausible alternative readings.