If \[E_{1},E_{2} and E_{3}\]   represent respectively the kinetic energies of an electron and an alpha particle and a proton each having same de-broglie wavelength then
a) \[E_{1}>E_{3}> E_{2}\]
b) \[E_{2}>E_{3}> E_{1}\]
c) \[E_{1}>E_{2}> E_{3}\]
d) \[E_{1}=E_{2}= E_{3}\]

Answer: a
Explanation: \[E_{1}>E_{3}> E_{2}\]