Question
Identify the molecules $(A)$ and $(B)$ shown below and select the right option giving their source and use.



Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Reason : Allergens in the environment on reaching human body stimulate mast cells in certain individuals.
$\begin{array}{|l|l|} \hline Column\,\,-I & Column\,\,-II \\ \hline (a)\,\,Hinge\,\,joint & (1)\,\,Between\,\,atlas\,\,and\,\,axis \\ \hline (b)\,\,Pivot\,\,joints & (2)\,\,Humerus\,\,and\,\,wrist \\ \hline (c)\,\,Ball\,\,and\,\,rocket\,\,joint & (3)\,\,Knee\,\,joint \\ \hline (d)\,\,Gliding\,\,joint & (4)\,\,Shoulder \\ \hline \end{array}$
Choose the correct options to fill $A, B$ and $C$, so as to complete the given $NCERT$ statement