The sum of the first ten terms of the geometric progression is S₁ and the sum of the next ten terms (11^th term to 20^th term) is S₂, then the common ratio will be-
(1) $\pm 10\sqrt{\frac{{\mathrm{S}}_1}{{\mathrm{S}}_2}}$         (2) $\pm \sqrt{\frac{{\mathrm{S}}_2}{{\mathrm{S}}_1}}$             (3) $\pm 10\sqrt{\frac{{\mathrm{S}}_2}{{\mathrm{S}}_1}}$            (4) $\sqrt{\frac{{\mathrm{S}}_1}{{\mathrm{S}}_2}}$