Which of the following statements is correct?
1. Common cold - Droplet Infection.
2. Typhoid - Contaminated food & water.
3. AIDS - Shaking hands.
4. Ringworm - Using infected towels.
(a) 1 and 2
(b) 3 and 4
(c) 1 and 3
(d) 1,2 and 4

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