If the potential difference of coolidge tube probucing X-ray is increased, then choose the corrent option (s).
Here, `lambda_0` is cut off wavelength and `lambda_(Ka) and lambda_(K beta)` are wavelengths of `K_(alpha) and K_(beta)` characteristic X-rays.
A. the interval between `lambda_(Kalpha)` and `lambda_(Kbeta) ` increases
B. the interval between `lambda_(Kalpha)` and `lambda_0 ` increases
C. the interval between `lambda_(Kbeta)` and `lambda_0 ` increases
D. `lambda_0` does not change