Which letter should replace question mark?

Question

Answer 1

E

---

T=20
H+ N=22
L+D+H=24
P+C+B+E= 26

Answer 2

D is the answer.

T is the 20th place in Alphabetic ,like wise
T =20
H+N(8+14) =22
LDH(12+4+8)=24
PCB'D'(16+3+2+5)=26

Comments

Isn't D = 4?