thE AFFECtion nAmE givEn to thE CloCk towEr oF thE housEs oF pArliAmEnt, wEstminstEr is ______.
A．Big BEn.
B．towEr oF lonDon.
C．golDEn gAtE BriDgE.
D．st. pAul's CAthEDrAl.