Identify the issue in this matplotlib 3D plot code snippet:
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.view_init(elevation=30, azimuth=45)
plt.show()
AThe method view_init() must be called before adding the subplot.
BThe projection argument should be '3D' instead of '3d'.
CThe parameter names 'elevation' and 'azimuth' are incorrect; should be 'elev' and 'azim'.
Dplt.show() should be called before setting the view angle.
