At 19.05 on 12 December there was a loud explosion in 2 Bathurst Street. A woman and child managed to escape from the house unhurt, but the ensuing fire claimed the lives of an elderly man and young baby. It is also known that: John Watts, aged 91, owned 2 Bathurst Street. A smell of gas had been reported at 15.00 on 12 December from 2 Bathurst Street. The police informed Fred Watts at 20.30 on 12 December of the death at 2 Bathurst Street of his baby son George Watts and his father John Watts. Fred Watts works nightshift at a local factory. Fred Watts is a divorcee.

Question: John Watts was not a grandfather.
Options:
A. true, B. false, C. uncertain
Answer: "B"