Which of the following types of injections requires a wheal to appear?

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Intradermal injections are administered just beneath the skin and require a wheal or raised bump to appear. This type of injection is commonly used for tuberculosis testing or allergy testing. Intramuscular injections (A) are administered into the muscle and do not require a wheal. Subcutaneous injections (B) are administered just beneath the skin but do not require a wheal to appear. Z-track injections (D) are administered intramuscularly and are a technique used to minimize local skin irritation and absorption of medication.

Which of the Following Types of Injections Requires a Wheal