In the following question, select the related word pair from the given alternatives.
BPTW : CQUX : : CHNS : ?
DIST
DIOT
BGOT
DSTO
B.
DIOT
BPTW : CQUX
B + 1 = C, P + 1 = Q, T + 1 = U, W + 1 = X
CHNS : ?
C + 1 = D, H + 1 = I, N + 1 = O, S + 1 = T