A Modern Skyscraper Such as the Seagram Building Can Have

Multiple Choice

A modern skyscraper such as the Seagram building can have glass as the "skin" of its exterior due to ________.

A) the tensile strength of the glass
B) its load bearing walls
C) the addition of post and lintel beams at key points of the structure
D) the strength of the internal skeleton of the steel cage
E) all of these are correct