Q266217 - EN - 2011 - ESCOLA NAVAL - Aspirante - Português e Inglês

According to the text, in what way has the modern building design worried architects, builders and engineers?

a) Glass façades make buildings quite expensive.
b) Glass façades make buildings too hot.
c) Glass façades require control systems, which are not safe enough.
d) Glass façades make people afraid of living in modern buildings.
e) Glass façades make buildings dangerous for people on the streets.