For characteristic $X$-ray of some material,which of the following relations is correct?

• A
  $E(K_{\gamma}) < E(K_{\beta}) < E(K_{\alpha})$
• B
  $E(K_{\alpha}) < E(L_{\alpha}) < E(M_{\alpha})$
• C
  $\lambda(K_{\gamma}) < \lambda(K_{\beta}) < \lambda(K_{\alpha})$
• D
  $\lambda(M_{\alpha}) < \lambda(L_{\alpha}) < \lambda(K_{\alpha})$