Which of the following pairs of theories about origin of the Earth and their propounders is/are correctly matched? 1. Gaseous Hypothesis : Kant 2. Binary Star Hypothesis : Russell 3. Planetesimal Hypothesis : Chamberlin Select the answer using the codes given below :

All three pairs are correctly matched. (1) The Gaseous (or Nebular) Hypothesis was first proposed by Immanuel Kant in 1755 and later refined by Laplace. (2) The Binary Star Hypothesis was proposed by H.N. Russell in 1937, suggesting that a companion star to the Sun was disturbed by a third star, causing the material that formed the planets. (3) The Planetesimal Hypothesis was proposed by T.C. Chamberlin and F.R. Moulton in 1904, suggesting that small solid bodies (planetesimals) were torn from the Sun by a passing star and gradually coalesced into planets.