If a stationary electron gets annihilated due to association with a stationary positron (hypothetically), the wavelength of resulting radiation will be .

Question

$(a)\;\large\frac{h}{m_{0} C}\qquad(b)\;\large\frac{2h}{m_{0} C}\qquad(c)\;\large\frac{h}{2m_{0}C}\qquad(d)\;None$