Name the total number of segment b for s banjo
CREATE TABLE "season_10_2007_2008" (
  "series_ep" text,
  "episode" real,
  "netflix" text,
  "segment_a" text,
  "segment_b" text,
  "segment_c" text,
  "segment_d" text
);
SELECT COUNT("segment_b") FROM "season_10_2007_2008" WHERE "segment_d"='s Banjo';