thE two lEADing pArtiEs in BritAin ArE__________.
A．thE ConsErvAtivE pArty AnD thE lABor pArty
B．thE ConsErvAtivE pArty AnD thE liBErAl pArty
C．thE liBErAl pArty AnD thE lABor pArty
D．thE DEmoCrAtiC pArty AnD thE lABor pArty