Whether trial counsel's Sixth Amendment duties require affirmative assistance in guilty-plea decision

QUESTIONS PRESENTED 1. Whether trial counsel's Sixth Amendment duties to a client during the guilty-plea negotiation stages require him to affirmatively assist a client in making the critical decision whether to accept or reject a guilty plea offer by giving the client defense-based advice and guidance on this decision and by fully discussing the offer's relative merits, benefits and drawbacks as compared to the strengths and weaknesses of the : case in light of counsel's trial strategy and the consequences of both accepting or rejecting (and is he ineffective by not doing so)? 2. Whether trial counsel is ineffective if he decides to delegate the duties and responsibilities he owes to a client during guilty-plea negotiations toa State's prosecutor? 3. Whether trial counsel is ineffective by making an offhand remark that caused a client to reject a guilty plea offer made during jury trial, where counsel told the client he can enter an open plea but failed to fully explain that it's not actually an "open plea" to all offenses (per trial judge's policy that all pleas entered at trial must be open pleas to all offenses) but is rather a guilty plea to just one offense for 8-20 years?