English grammar error-spotting (idiom for fuel efficiency: ‘‘kilometres to the litre’’): Read the sentence split into A–D and choose the erroneous part. Sentence: ‘‘He says that / his car does / eight kilometers in a litre / No error.’

Given data

• C expresses mileage/consumption as ‘‘kilometers in a litre’’.

Concept / Approach
In Indian/British usage, the idiomatic phrasing is ‘‘kilometres to the litre’’ (km per litre). Therefore ‘‘in a litre’’ is nonstandard here.

Correction
‘‘His car does eight kilometres to the litre.’’ (Also standard: ‘‘gets 8 km/l’’.)

Common pitfalls

• Using ‘‘in’’ instead of ‘‘to’’ (or ‘‘per’’) in rate expressions.
• Mixing singular/plural inconsistently—‘‘kilometres’’ plural with a specific number is correct.

Final Answer
eight kilometers in a litre