Which one of the following statements regarding the Vedic tradition is incorrect?

The early Vedic tradition was compiled between BC E. 1000 to 1600 CE.

The Rigveda consists of hymns in praise of Agni, Indra and Soma.

The Rajasuyas and Ashvamedha Yajnas were performed by Kings.

Many Vedic ideas were found in the Upanishads.