Which 1876 Gothic Revival church in Christchurch, designed by Benjamin Mountfort, was the first cathedral built in a British colony to have a stone vaulted ceiling?

• A St Mary's Pro-Cathedral
• B St Paul's Cathedral
• C St Patrick's Cathedral
• D ChristChurch Cathedral ✓

Benjamin Mountfort's ChristChurch Cathedral (consecrated 1881) in Cathedral Square was a landmark of Victorian Gothic architecture in the Southern Hemisphere, substantially damaged in the 2010ΓÇô11 earthquakes.