CREATE TABLE table_19878 ("Series Ep." TEXT, "Episode" FLOAT, "Netflix" TEXT, "Segment A" TEXT, "Segment B" TEXT, "Segment C" TEXT, "Segment D" TEXT)

In the episode where segment a is microphones, what is segment d?
SELECT "Segment D" FROM table_19878 WHERE "Segment A" = 'Microphones'
SELECT "Segment D" FROM "table_19878" WHERE "Segment A" = 'Microphones'