How does the phenomenon of 'adsorption' contribute to the removal of unwanted antibodies in blood grouping?

A By using a specific enzyme to break down the antibodies
B By using a adsorbent material to remove the antibodies ✓
C By using a filter to physically remove the antibodies
D By using heat to denature the antibodies

Explanation

Adsorption is a technique used to remove unwanted antibodies in blood grouping by using an adsorbent material, such as red blood cells, to bind and remove the antibodies.

Source

Immunohematology textbooks
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Hard MEDICAL Confidence: medium