Given below are two statements :

Statement $I$ : Bone marrow is the main lymphoid organ where all blood cells including lymphocytes are produced.

Statement $II$ : Both bone marrow and thymus provide micro environments for the development and maturation of T-lymphocytes.

In the light of above statements, choose the most appropriate answer from the options given below :

Lacking of $B$-cells and $T$-cells is known as

Thymus is the site for the development and maturation of

Which is an auto immune disease

Antivenom injection contains preformed antibodies while polio drops that are administered into the body contain