Find the square root of `a+b+c+d+2sqrt(ca+cb)-2sqrt(cd)-2sqrt(ad+bd)`

Options

A. `sqrt(a+b)+sqrt(c)-sqrt(d)`
B. `sqrt(a)+sqrt(b)+sqrt(c)-sqrt(d)`
C. `sqrt(a)+sqrt(b+c)-sqrt(d)`
D. `sqrt(a+b)+sqrt(c-d)`

Answer

A