1. The holes and electrons are separated into two free electrons and one free hole. This process creates an excess unpaired electron in the conduction band of TMD due to photoexcitation, which are now available to form additional trions in TMDs. Thus, this scenario should enhance the ESFG signal corresponding to trion transitions -creating a positive transient signal, which is opposite from the measured transient decrease of ESFG signals. The described model suggests that the transient signal should be a bi-exponential decay, with the dynamics are independent of frequency because only one spectral component should exist.