When blood clotting takes place, injury to blood vessels triggers L, and M changes into N. What are L, M and N?
- AL: fibrin; M: platelets; N: fibrinogen
- BL: fibrinogen; M: platelets; N: fibrin
- CL: platelets; M: fibrin; N: fibrinogen
- DL: platelets; M: fibrinogen; N: fibrin