Read this excerpt from The Great Fire.

When the Waterworks burned down at around three in the morning, the pumping machines went dead, and the water supply to the city stopped. The men at the Tribune would do their best to stamp out and smother the burning embers that landed on the roof, but eventually, the fire won out. The shock felt by White and other citizens when they learned the Tribune was a gutted skeleton was captured perfectly by Charles Mackintosh. After describing at great length how solid and fireproof the Tribune Building was, Mackintosh paused and, with a sad sigh, he concluded, "That is, it was fireproof up to the date of its destruction."

Which statement best reflects the theme of this paragraph?

Certain buildings were destroyed because no one tried to save them.
Certain buildings were destroyed because they were not fireproof.
People were surprised that others tried to save the Tribune.
People were surprised by the strength and power of the fire.