I agree. Answer is BDXL. This is a triple-layer BDXL discs with a 100 GB capacity, from SONY. This was released around 2010. My reasoning is the question does not address compatibility issues or whether the blu-ray disc must be recordable or rewritable or how the disc would be distributed. So reading the question leads to D. BDXL as being the correct answer.

Answer should be D. BDXL.
The BDXL format allows 100 GB write-once discs. However, a standard Blu-ray disc, dual layer allows only 50 GB (BD-RE DL)