All - 

A client has a Section 1256 loss of $381, 

I am confused with the 4 check boxes A) Mixed Straddle; B) Straddle by Straddle; C) Mixed Straddle account election D) Net Section 1256 loss election

There are only 2 contract transactions on the same date and they expired. My question, how does one determine the appropriate check box? From what I have read, it appears that D would be correct but I'm not sure.

Thanks!