If initial velocity of an object is zero, then distance covered by it in time t and acceleration of $$$9.8ms^{-2}$$$ would be

• A. $$$2.9 :t^{2}$$$
• B. $$$3 :t^{2}$$$
• C. $$$4 :t^{2}$$$
• D. $$$4.9 :t^{2}$$$