Public transport in the London Borough of Havering

Columns: Station | Manager | Category | Fare zone
Elm Park | London Underground | n/a | 6 | Emerson Park | London Overground | F | 6 | Gidea Park | TfL Rail | C | 6 | Harold Wood | TfL Rail | C | 6 | Hornchurch | London Underground | n/a | 6 | Rainham | c2c | C | 6 | Romford | TfL Rail | C | 6 | Upminster | c2c | C | 6 | Upminster Bridge | London Underground | n/a | 6

Example questions:
What is the category of the station that is part of the Public transport in the London Borough of Havering and on the Romford to Upminster Line ? | What is the category of the station that is part of the Public transport in the London Borough of Havering and opened in 1885 by the LTSR ?

Answers:
F | C