Which of the following best describes temperature variations?

I think i know this, but I’m not sure, because i keep searching on the web and in my book and they all say something different. I think it’s a… but who knows.. Can someone help me out here, i’ll give the first one to answer with a great explantation best answer. Thannkk you! :]

Water has a high specific heat capacity, which in this context means it tends to maintain its temperature very well. That being the case, one would expect relatively low temperature variations over water as compared to land. Go with a.

B