Could LIGO's black holes be primordial and what is an easy way to figure that out?

          @misc{ scivideos_PIRSA:17110079,
            doi = {10.48660/17110079},
            url = {https://pirsa.org/17110079},
            author = {},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Could LIGO{\textquoteright}s black holes be primordial and what is an easy way to figure that out?},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2017},
            month = {nov},
            note = {PIRSA:17110079 see, \url{https://scivideos.org/index.php/pirsa/17110079}}
          }