The answer is C. Ink is added to the engraved grooves.
An English translation for this
The director leads the creative team.
A form of animation similar to stop-motion<span>, but which incorporates </span>motion<span> blur. Ordinary </span>stop motion<span> cannot produce </span>motion<span> blur as </span>motion<span> only occurs </span>between <span>frames. ... This effect is most noticeable when frames are repeated or deleted in order to obtain </span>slow motion<span> or fast </span>motion<span>.
Hope that helped :)</span>
