1. The problem statement, all variables and given/known data Choose the correct option (only one correct option) Two photons having A.) equal wavelengths have equal linear momenta B.) equal energies have equal linear momenta C.) equal frequencies have equal linear momenta D.) equal linear momenta have equal wavelengths 2. Relevant equations λ=h/p E=pc f=c/λ 3. The attempt at a solution All options seem correct to me. But the correct answer given in my book is the option d.) Looking for an explanation for why the other three are incorrect.