Consider the following statements comparing exocrine and endocrine glands: 1. Exocrine glands possess ducts to secrete their products onto epithelial surfaces, whereas endocrine glands are ductless and secrete hormones directly into the interstitial fluid or bloodstream. 2. The pancreas is a heterocrine gland, where the acinar cells perform the endocrine function and the Islets of Langerhans perform the exocrine function. 3. Endocrine secretions generally have a slower onset but longer duration of action compared to exocrine secretions. Which of the statements given above are correct?

Options:

• A: 1 and 2 only
• B: 1 and 3 only
• C: 2 and 3 only
• D: 1, 2 and 3

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