'Prophylaxis' is a significant concept in medical science to prevent humans from many diseases. Specific vaccines for different diseases are prepared by different methods. Which of the following statements are mismatched?

P. Salk's vaccine for typhoid - using toxoids.

Q. BCG vaccine for tuberculosis - using living weakened germs.

R. Salk's vaccine for poliomyelitis - using killed germs.

1. Only P
2. Only R
3. Only P and Q
4. Only Q and R

Mohit was playing football in the school playground with his friends. All of a sudden, he fell badly on the ground. His right hand was most likely fractured. What first-aid should be given to him?

1. Mohit should be laid down on the ground and the fractured part should be moved continuously.
2. Tie a sling to rest the arm on it.
3. Apply some alkali, like baking soda on the fractured part.
4. Apply hot water bag around the fractured part

Assertion (A): The disease causing agent/pathogen of 'dengue' is a type of mosquito — Aedes aegypti.

Reason (R): Aedes aegypti spreads germs from a diseased person to a healthy person.

1. Both A and R are true.
2. Both A and R are false.
3. A is true and R is false.
4. A is false and R is true.

Assertion (A): 'HIV' is a kind of fungal disease which is usually transmitted through sexual contact or blood transfusion.

Reason (R): The fungus grows and develops in the reproductive organs of humans and get transmitted easily during sexual contact.

1. Both A and R are true.
2. Both A and R are false.
3. A is true and R is false.
4. A is false and R is true.