TNA123

Hi, I am working for Employer E1, Vendor V and Client C. My employer E1 filed for H1B amendment for client location C which got RFE(Right to control) and after RFE response it got denied and waiting for denial response Document from USCIS. My current I-94 is valid till Jan 2018. below is my questions: 1. Is it legal for me to work for client C till I-94 and/Or if the new petition is filed and during when the new petition is in processing? 2. At this point, can I transfer my H1B to new employer/Vendor V? Will my H1B amendment denial affect the H1B transfer? 3. What are the other option available?