According to the council on tall building and urban habitat (ctbuh), why are the petronas towers taller than the sears tower? a. according to the ctbuh, decorative spires are included in a building’s height, antennae are not. b. according to the ctbuh, antennae are included in a building’s height, not decorative spires. c. according to the ctbuh, the petronas towers are not taller than the sears tower. d. none of the above