Among the following, which surfactant will form micelles in aqueous solution at the lowest molar concentration at ambient conditions?
A. `CH_(3)(CH_(2))_(15)N^(+)(CH_(3))_(3)Br^(-)`
B. `CH_(3)(CH_(2))_(11)OSO_(3)^(-)Na^(+)`
C. `CH_(3)(CH_(2))_(6)COO^(-)Na^(+)`
D. `CH_(3)(CH_(2))_(11)N^(+)(CH_(3))_(3)Br^(-)`
