In the case of nuclear disaster which of the following options for cooling the nuclear reactors may be adopted ?
1. Pumping of water to the reactors.
2. Use of boric acid.
3. Taking out the fuel rods and keeping them in a cooling pond.
Select the correct answer using the code given below:

Options

A. 1, 2 and 3
B. 1 and 2 only
C. 2 and 3 only
D. 3 only