Select the option that is related to the third term in the same way as the second term is related to the first term.

Malaria : Parasite : : Stomach ulcers : ?

Bacteria

Malaria : Parasite : : Stomach ulcers : ?

The logic followed here is :

Malaria : Parasite ⇒ Malaria is caused by parasite

Similarly

Stomach ulcers is caused by Bacteria