Answer:
B. decreasing
Explanation:
From the graph provided, we can see that the amount of Parent isotope decreases as the age of the Parent isotope increases (the general trend has a downward slope).
The robbery was planned by Ram Prasad Bismil and Ashfaqullah Khan. It was executed by Bismil, Khan, Chandrashekhar Azad, Rajendra Lahiri, Shachindra Bakshi, Keshab Chakravarty, Murari Lal Khanna(Gupta), Banwari Lal, Mukundi Lal Gupta and Manmathnath Gupta.
