Before revision:  In particular, we extend the results provided by Araneda Axel A. Araneda. The fractional and mixed-fractional CEV model. Journal of Computational and Applied Mathematics, 363:106-123, 2020 arriving at the option pricing under the sub-fractional CEVmodel .
After revision:  In particular, we extend the results provided by Araneda  arriving at the option pricing under the sub-fractional CEVmodel .