In order to double the frequency of the fundamental note emitted by a stretched string, the length is reduced to \[\frac{3}{4}\]th of the original length and the tension is changed. The factor by which the tension is to be changed, is [EAMCET 2001]

• A. \[\frac{3}{8}\]
• B. \[\frac{2}{3}\]
• C. \[\frac{8}{9}\]
• D. \[\frac{9}{4}\]