Answer: C) neither.
Explanation: A simile is a figure of speech that consists in making a comparison between elements that aren't obviously related, this comparison is made using the words "like" and "as." A metaphor is also a comparison but it is direct (without using the words "like" or "as"). The given phrase isn't an example of a simile of a metaphor because it isn't comparing anything, it is just describing the veils by saying that they are made of white lace.