Energy levels A,B,C of a certain atoms corresponding to increasing values of energy level i.e., `E_(A) lt E_(B) lt E_(C)`. If `lambda_(1), lambda_(2)` and `lambda_(3)` are the wavelengths of radiations corresponding to the transitions C to B,B to A and C to A respectively which of the following statement is correct?
A. `lambda_(3) = lambda_(1) +lambda_(2)`
B. `lambda_(3) = (lambda_(1)lambda_(2))/(lambda_(1)+lambda_(2))`
C. `lambda_(1)+lambda_(2)+ lambda_(3) = 0`
D. `lambda_(3)^(2) =lambda_(1)^(2)+lambda_(2)^(2)`
