When an oceanic plate collides with a continental plate:

A- The oceanic plate is forced beneath the continental plate

B- The oceanic plate is folded into mountain ranges

C- Both plates sink into the fluid mantle

D- Both plates are folded into mountain ranges

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.