In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it, i.e., the proper nouns in the passage. Your job is to determine whether information from more than one term is needed to answer the question. Indicate your choice as 'a' for Yes or 'b' for No.
Q: Question: Has Trax FM ever been owned by BBC? Passage:Retford's officially designated BBC Local Radio station in terms of radio coverage is BBC Radio Sheffield. However, editorially, local news coverage is covered on BBC Radio Nottingham's radio and Internet outlets, despite Retford being outside the official coverage area of both BBC Radio Nottingham's FM and DAB signals. Trax FM also editorially covers the town of Retford, although its Ofcom designated FM coverage area only covers the Doncaster area, Worksop and rural areas west of Retford, Retford is covered on DAB via the Sheffield multiplex. Hallam FM's and Greatest Hits South Yorkshire's AM signals also cover the town of Retford. National analogue FM radio services from the BBC and Classic FM are broadcast from the Holme Moss transmitting station in West Yorkshire. Digital Radio services come primarily from the Clarborough transmitter outside of Retford for the Sheffield and Digital One multiplexes, Clifton transmitter near Doncaster for the BBC National DAB multiplex and the Belmont, High Hunsley (near Hull) and Tapton Hill (Sheffield), Waltham and Emley Moor transmitters for the Sound Digital multiplex.

A:
b