设三元方程：x²y-2zlny+E^xz=E²，根据隐函数存在定理，存在点(0，1，2)的一个邻域，在此邻域内，该方程 ( )
A．只能确定一个具有连续偏导数的隐函数z=z(x，y)
B．可以确定两个具有连续偏导数的隐函数y=y(x，z)和z=z(x，y)
C．可以确定两个具有连续偏导数的隐函数x=x(y，z)和z=z(x，y)
D．可以确定两个具有连续偏导数的隐函数x=x(y，z)和y=y(x，z)

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