A ship sails from 179ºE to 179ºW. Meanwhile, the other ship sails from 1ºE to 1ºW, which one is correct of the following choices______: A: Both the magnitude and direction of D'long for the two ships are equal B: Both the magnitude and direction of D'long for the two ships are unequal C: The magnitudes of D'long for two ships are equal, but the directions of D'long are unequal D: The magnitudes of D'long for two ships are unequal, but the directions of D'long are equal

At a instant, the magnitudes of velocities of points [img=14x19]1803a110c41a5ac.png[/img] and [img=14x19]1803a110ccca93a.png[/img] in a plane figure are [img=19x17]1803a110d54e8f5.png[/img] and [img=19x17]1803a110de4a0df.png[/img] , respectively, and [img=61x17]1803a110e6ea33c.png[/img]. Which drawings are impossible for the velocity directions? A: [img=208x229]1803a110f15ab6d.png[/img] B: [img=210x229]1803a110fbaf808.png[/img] C: [img=215x229]1803a11105c64ec.png[/img] D: [img=208x250]1803a11111be725.png[/img]