Which of the following statements is/are not correct regarding the age of Vedic Civilisation? I. Bal Gangadhar Tilak, on astronomical grounds, dated Rig Veda to 6000 B.C. to Harmon Jacobi, Vedic civilization flourished between 4500 B.C. and 2500 B.C. and the Samhitas were composed in the latter half of the period. II. Famous Sanskritist, Winternitz felt that the Rig Veda was probably composed in the third millennium B.C.