Two identical particles having the same mass m and charges +q and -q separated by a distance d enter a uniform magnetic field B directed perpendicular to paper inwards with in speeds \[{{v}_{1}}\] and \[{{v}_{2}}\] as shown in Fig. The particles will not collide if

• A. \[d>\frac{m}{Bq}({{v}_{1}}+{{v}_{2}})\]
• B. \[d<\frac{m}{Bq}({{v}_{1}}+{{v}_{2}})\]
• C. \[d>\frac{2m}{Bq}({{v}_{1}}+{{v}_{2}})\]
• D. \[{{v}_{1}}={{v}_{2}}\]