[单选题]
The following graph reprr 57hw+ es5a m)9be yoe; z0z/qr;mojaesents the change of concentration of a gasv 5l hlb44k0ko)wyy*z (wm/ rdeous reactant and gabw5 vml*4ydloy)h k (k/z0 4rwseous product during a reaction. At t=10mins, the temperature is increased and at t=15mins, the volume of the reaction vessel is increased.
A. Enthalpy change of forward reaction is Exothermic;Moles of gasis is Reactants more than the products
B. Enthalpy change of forward reaction is Exothermic;Moles of gasis is Reactants less than the products
C. Enthalpy change of forward reaction is Endothermic ;Moles of gasis is Reactants more than the products
D. Enthalpy change of forward reaction is Endothermic;Moles of gasis is Reactants less than the products
