Consider an infinite $G.P. $ with first term a and common ratio $r$, its sum is $4$ and the second term is $3/4$, then

  • [IIT 2000]
  • A

    $a = \frac{7}{4},\,r = \frac{3}{7}$

  • B

    $a = \frac{3}{2},\,r = \frac{1}{2}$

  • C

    $a = 2,\,r = \frac{3}{8}$

  • D

    $a = 3,\,r = \frac{1}{4}$

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