(A) English year is about 57 years behind Vikrami year
(B) Shaka year is about 78 years behind English year
(C) All 4 Yugas are of equal duration
(D) A Yuga is not less than 432 thousand years long
While music therapy addresses problems associated with areas signified by various planets, which of the following planet can be considered as the key planet to heal via this therapy?