Consider the following statements regarding mechanical and electromagnetic waves:\n1. Mechanical waves require a material medium for propagation, whereas electromagnetic waves can travel through a vacuum.\n2. Electromagnetic waves are longitudinal in nature, while mechanical waves can be either transverse or longitudinal.\n3. The speed of electromagnetic waves is constant in all media, whereas the speed of mechanical waves depends on the elasticity and density of the medium.\nWhich of the statements given above is/are correct?

Options:

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

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