How Does the SARS-CoV-2 Virus Attach Itself to Specific Receptors

How does the SARS-CoV-2 virus attach itself to specific receptors on the target host cell?

A) The virus uses the envelope to attach itself to the host cell receptors.
B) The virus uses S proteins to attach itself to the host cell receptors.
C) The virus uses E proteins to attach itself to the host cell receptors.
D) The virus uses M proteins to attach itself to the host cell receptors.