In Vedic astrology, the Dasha system (planetary period or karmic cycle) is used to determine the timing of events in a person’s life. The calculation of the Dasha periods is based on the position of the Moon at birth in the nakshatras. If someone is born in a Ketu nakshatra, how many years will the Ketu Mahadasha last in this person’s life?

(A) 7      (B) < 7      (C) > 7      (D)