Given the above diagram, which statement correctly matches the letter to the type of IS-IS hello
PDU?

A.
A=ESH; B=ISH; C=IIH

B.
A=ISH; B=IIH; C=ESH

C.
A=IIH; B=ESH; C=ISH

D.
A=ISH; B=ESH; C=IIH

E.
A=IIH; B=ISH; C=ESH