Which of the Following Examples Best Demonstrates Mature Money Management

Which of the following examples best demonstrates mature money management?

A) Lina doesn't necessarily track her spending habits, but she does manage to at least break even each month.
B) Tyrese's spending habits are largely influenced by keeping up with the latest trends and conveniences.
C) Donna often borrows when interest rates are low.
D) Diego earns $1,900 a month and begins to curb his discretionary spending when he notices his account balance dip to $4,800.