In the figure provided below,what type of igneous intrusion is the vertical rock unit shown by letter A? 
Definitions:
Acute Stress
A short-term physiological response to an immediate perceived threat, which can enhance performance or cause anxiety.
Somatic Symptom
involves physical symptoms that are distressing and may not have a discernible medical cause, often associated with somatic symptom disorder.
Physical Problem
A health issue directly related to the physiological function of the body.
Conversion Disorder
A mental condition where a person has blindness, paralysis, or other nervous system symptoms that cannot be explained by medical evaluation.
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