Two similar coils of radius R are lying concentrically with their planes at right angles to each other. The currents flowing in them are I and 2I, respectively The resultant magnetic field induction at the centre will be:

• A. \[\frac{\sqrt{5}{{\mu }_{0}}I}{2R}\]
• B. \[\frac{3{{\mu }_{0}}I}{2R}\]
• C. \[\frac{{{\mu }_{0}}I}{2R}\]
• D. \[\frac{{{\mu }_{0}}I}{R}\]