According to the passage, which of the following styles of architecture was the last to become fashionable in San Francisco

A．can remember only where their food is
B．cannot learn to go to the correct door
C．have a short-term memory of one-sixth a minute
D．have no short-term memory

A．To talk about the restoration of Victorian houses in San Francisco in the 1960s.
B．To discuss housing problems in San Francisco today.
C．To briefly trace the history of Victorian houses in San Francisco.
D．To categorize the three types of Victorian houses found in San Francisco.