To Avoid Tolerance Associated with Continuous Use of Nitrate Patches,the

To avoid tolerance associated with continuous use of nitrate patches,the patient should be advised to:

A) only apply the patches in the morning and evening.
B) only apply the patches when the angina symptoms become apparent.
C) have a nitrate-free period from the patches for about 12 hours each day.
D) only apply the patches at bedtime.

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