The answer is C Felix Mendelssohn
856 + (19 - 3 - (6 + (5 - 3) - (2 + 1) + (5 - 3) ) ) = 856 + (16 - (6 + 2 - 3))
= 856 + (16 - 5)
= 856 +11
= 867
Man/woman because a baby crawls on all fours then two legs and two legs but includes a cane and the cane does classify as a third leg in the riddle :)
