A patient with IDDM injects a mixture of NPH insulin and crystalline zinc (Regular) insulin before breakfast (at 7 AM) and before dinner (at 8 PM) each day. She reports the following average self monitored RBS for the past week.
Increasing the 7 AM dose of NPH insulin Increasing both 7 AM and 8 PM doses of NPH insulin Increasing the 7 AM dose of regular insulin Increasing both the 7 PM and 8  PM dose of regular insulin