Long-Term, Who Is Most Likely to Succeed in an Attempt

Long-term, who is most likely to succeed in an attempt to lose weight?

A) Gaila, who decides to lose weight by cutting out potato chips and ice cream from her diet
B) Pavel, who decides to lose weight by going on a high-protein, no-carbohydrate diet
C) Nyota, who decides to lose weight by cutting meat completely out of her diet
D) Hikaru, who decides to lose weight by restricting his caloric intake to 1,000 calories per day