[单选题]
The relationship betweenpm 74f ljr qdz;/ic+;v energy, 7ncm,t(ayj(7b v.m lme(5d ukE, and wavelength, λ, is shown according to the equation below.cdmamnje((t5 l,b(7k v. y u7m E=$\frac{hc}{λ}$
Which of the below statements are correct for the graph below representing E=$\frac{hc}{λ}$
?
I. Energy and wavelength are directly proportional
II.The units for the gradient are J m$^{-1}$
III.The y-intercept has the units J
A. I and III only
B. II and III only
C. III only
D. I, II, and III
