HELP!!!

What is the best way to change this sentence from passive voice to active voice?

The festival of Diwali is celebrated by Indians all over India.
A.
Indians all over India celebrate the festival of Diwali.
B.
The festival of Diwali in Northern India is celebrated all over by Indians.
C.
Indians all over India have celebrated the festival of Diwali.
D.
The festival of Diwali is celebrated all over India by Indians.