Which letter-cluster will replace the question mark (?) to complete the given series? PYWB, MVYD, ?, GPCH, DMEJ

Which letter-cluster will replace the question mark (?) to complete the given series? PYWB, MVYD, ?, GPCH, DMEJ

A. JSBF

B. JTBF

C. JTBG

D. JSAF

Sol:

Pattern follows here is -3, -3, +2, +2