Who among the following gave us the names of the twelve divisions of the solar zodiac and whose calculation of the earth's circumference was not off the mark?

Aryabhata named the twelve signs of the solar zodiac and computed the earth's circumference with remarkable accuracy.

Isarak is not credited with these astronomical achievements.

Bhaskaracharya, though a great mathematician, is not the figure meant here.

Brahmagupta advanced work on zero and algebra but not this zodiac naming.

Aryabhata also proposed that the earth rotates on its axis.

His work the Aryabhatiya dates to about 499 CE.