Both C and D are the answers. But I will go with D
Answer:
ask more questions to open up and definitely confront the problem to her so you guys can work it out because if you don't and you both keep holding back it's not finna help nun so just go to her talk to her get out of you comfort zone. make the first moves yk don't hold back communication is key.
It's an energy that is released by nuclear fission, decay and fussion. This generate enrergy
10-13 years normally.
Hope this helps, and good luck!