The quantity of heat energy required to melt completely 1kg of ice at -30°C is [latent heat of fusion = 3.5 x 10° J/kg, specific heat capacity of ice = 2.1 x 105..1kg-'1<-1

• A.4.13 x 10⁶J
• B.4.13 x 10⁵J
• C.3.56 x10⁴J
• D.3.56 x 10²J