Regarding the frame rate of the image, the following statements are correct () multiple selection
A . When the frame rate reaches 20fps, the picture seen by the human eye is continuous.
B . The human eye does not feel the difference between a frame rate of 60 fps and a frame rate of 30 fps.
C . The human eye does not feel the difference between a frame rate of 90 fps and a frame rate of 60 fps.
D . When the frame rate reaches 30fps, the picture seen by the human eye is continuous.
Answer: C,D