1. The steps required for conversion of kitchen garbage into manure are given below in a jumbled form. (i) Put garbage in a pit. (ii) Cover the bottom of the pit with sand. (iii) Cover the pit loosely with a gunny bag or grass. (iv) Add worms. Which of the following shows the correct sequence of the above steps? (a) (ii); (i); (iii); (iv) (b) (i); (ii); (iii); (iv) (c) (ii); (iv); (i); (iii) (iv); (i); (ii); (iii)