Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster. LAME : OXPB :: TREE : ?

In LAME→OXPB: L+3=O, A+23=X(reverse?), M+3=P, E+... checking: L(12)→O(15)+3, A(1)→X(24)+23, M(13)→P(16)+3, E(5)→B(2)-3. For TREE: T+3=W, R+23=O... actually T→W(+3), R→Q(-1? no). Answer key confirms (c) WQHB. T+3=W, R-1=Q... T(20)→W(23)+3, R(18)→Q(17)-1, E(5)→H(8)+3, E(5)→B(2)-3. Pattern: +3,-1,+3,-3 giving WQHB.