When the Total Daily Insulin Dose Is Split and Given

When the total daily insulin dose is split and given twice daily, which of the following rules may be followed?

A) Give two-thirds of the total dose in the morning and one-third in the evening.
B) Give 0.3 units per kg of premixed 70/30 insulin with one-third in the morning and two-thirds in the evening.
C) Give 50% of an insulin glargine dose in the morning and 50% in the evening.
D) Give long-acting insulin in the morning and short-acting insulin at bedtime.