Because you have to do frame by frame movements and depending on how smooth you want your animation to be would depend on how many frames are required.
Oh for you, I would have done whatever
And I just can't believe we ain't together And I wanna play it cool But I'm losin' you
I'll buy you anything I'll buy you any ring
And I'm in pieces, baby fix me And just shake me, 'til you wake me from this bad dream I'm goin' down, down, down, down
And I can't just believe my first love won't be around And I'm like baby, baby, baby oh
Like baby, baby, baby no Like baby, baby, baby oh I thought you'd always be mine (mine) Baby, baby, baby oh like baby, baby, baby no Like baby, baby, baby ooh I thought you'd always be mine
B is the answer to number 1