Thymus:
I: | is located ventral to the heart/aorta |
II: | plays a major role in differentiation of T-lymphocytes |
III: | promotes production of antibodies |
IV: | enlarges with age |
1. Only I, II and III are correct
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct