![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
About platelets, which are right( )
A.
are involved in hemostasis and clotting
B.
are derived from megakaryocytes in bone marrow
C.
lack of nucleus, while there are cytomembrane and organelles
D.
contain substances involved in hemostasis in granules
E.
normal value is(100~300)×109/L