Does a "take-a-joke" comment by the police compel a confession to be inadmissible?

"'It is well settled that a confession is involuntary and therefore inadmissible if it was elicited by any promise of benefit or leniency whether express or implied. [Citations.] However, mere advice or exhortation by the police that it would be better for the accused to tell the truth when unaccompanied by either a threat or promise does not render a subsequent confession involuntary. . . .'" (People v. Holloway (2004) 33 Cal.4th 96, 115.) An improper promise by police does not require exclusion of a confession unless "the promise was a motivating factor in the giving of the statement." (People v. Vasila (1995) 38 Cal.App.4th 865, 874.)

A. The "Take Responsibility" Remark