Which one of the following is a wrong statement regarding mutations ?

Read the following four statements (A-D) :
(A) Colostrum is recommended for the new born because it is rich in antigen
(B) Chikengunya is caused by a Gram negative bacterium
(C) Tissue culture has proved useful in obtaining virus-free plants
(D) Beer is manufactured by distillation of fermented grape juice
How many of the above statements are wrong ?

Which one of the following statements is correct with respect to immunity?

Identify the human developmental stage shown below as well as the related right place of its occurrence in a normal pregnant woman, and select the right option for the two, together.