Given the TLC (thin layer chromatography) plate below, determine which of the errors below likely occurred: - Thhe following TLC plate has been fully developed and marked so that all spots are indicated. - The stationary phase of the TLC plate is composed of relatively polar silica gel. In other words, a standard stationary phase is being used. - The "starting line" represents where a given compound or multiple compounds have been spotted before development of the TLC plate (see key). - The "solvent front" represents the distance traveled by the eluent (solvent) up the TLC plate. (Multiple Answer: Multinle answers mav he corrort and all ronnect answers must be indicated for full credit The TLC plate was likely not given sufficient time to develop. One of the standards was likely contaminated with a component from anothemstandard. Pen was likely used to mark the TLC plate before development. An improper developing solvent was likely chosen. Too much developing solvent was likely used