Sentence Correction

According to psychologists, many dieters subconsciously prefer a diet plan whose effectiveness is uncertain -- a consideration that, in case of failure, lets them blame the supposed ineffectiveness of the plan rather than their own lack of self-control.

A)a diet plan whose effectiveness is uncertain -- a consideration that, in case of failure, lets them blame the supposed ineffectiveness of the plan rather than their own lack of self-control.

B)an uncertain diet plan in terms of effectiveness: such plans allow them to believe that the supposed ineffectiveness of the plan is to blame, rather than that they lack self-control in case of failure

C)diet plans with uncertain effectiveness, which will allow them to blame the supposed ineffectiveness of the plan, rather than to lack self-control, in case of failure

D)uncertainly effective diet plans, allowing them to believe the plans that are supposedly ineffective, rather than that they lack self-control, in case of failure

E)diet plans uncertain in effectiveness; in case of failure, allowing them to believe that the plan itself is ineffective rather than that they lack self-control