If \(x + iy = \sqrt {\frac{{a + ib}}{{c + id}}}\), then the value of x2 + y2 is -

\({\frac{{{a^2} + {b^2}}}{{{c^2} + {d^2}}}}\)

\(\sqrt {\frac{{{a^2} + {b^2}}}{{{c^2} + {d^2}}}}\)

\(\sqrt {\frac{{a - ib}}{{a + ib}}}\)

If \(x + iy = \sqrt {\frac{{a + ib}}{{c + id}}}\), then the value of

1.	If \(x + iy = \sqrt {\frac{{a + ib}}{{c + id}}}\), then the value of x2 + y2 is -
A.	\(\sqrt {\frac{{{a^2} + {b^2}}}{{{c^2} + {d^2}}}}\)
B.	\({\frac{{{a^2} + {b^2}}}{{{c^2} + {d^2}}}}\)
C.	ad - bc
D.	\(\sqrt {\frac{{a - ib}}{{a + ib}}}\)
Answer» B. \({\frac{{{a^2} + {b^2}}}{{{c^2} + {d^2}}}}\)