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46 'RNA interference (RNAi)' technology has gained popularity in the last few years. Why?

1. It is used in developing gene silencing therapies. 2. It can be used in developing therapies for the treatment of cancer. 3. It can be used to develop hormone replacement therapies. 4. It can be used to produce crop plants that are resistant to viral pathogens.

Select the correct answer using the code given below:

(a) 1, 2 and 4
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1 and 4 only