Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
p _ t b c p r _ b c _ r t b _ p _ t _ c
1
r, p, c, t, b, r
2
r, t, p, c, r, b
3
r, p, t, r, b, c
4
r, c, p, b, t, r
Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
p _ t b c p r _ b c _ r t b _ p _ t _ c