The correct option is D 6:22 a.m.
At 6:00 a.m., the initial angle between minute and hour hand is 180∘.
We know that the angle made by hour hand in 1 minute is (3060)∘ and angle made by minute hand in 1 minute is (36060)∘.
Let us assume that after x minutes, the angle is 59∘.
⇒59∘=180∘−(36060)∘x+(3060)∘x
⇒59∘=180∘−6∘x+0.5∘x
⇒x=22 min
Therefore, required time is 6:22 a.m.