Which statement best describes the differences between architectural developments in Russian and Inca culture?

Russian architecture used few expensive materials; Inca architecture used plenty of gold
Russian architecture was built to withstand earthquakes; Inca architecture was weak
Russian architecture extravagant, Inca architecture was elegantly simple.
Russian architecture emphasized the rectangle; Inca architecture emphasized the sphere.

The statement that best describes the differences between architectural developments in Russian and Inca culture is: "Russian architecture emphasized the rectangle; Inca architecture emphasized the sphere."