What caused X was Y (OR) The thing that caused X was Y
For me A OR C is correct. But C is wordier than A so I will go with A
For me A OR C is correct. But C is wordier than A so I will go with A
![FLO – Therapy at the Club – Pre-Single [iTunes Plus M4A]](http://is1-ssl.mzstatic.com/image/thumb/Music221/v4/a4/11/88/a41188ed-0f2e-e8d5-1163-d59e373cc58c/26UMGIM30046.rgb.jpg/208x208bb.webp)
