[单选题]
If 40 kcal of heat is added to 2q 0(hahphjeee *(h4wb)vu)/z e* g kb2.0 kg of water, what is th6;x/-c5 kgyrdh8/+lch sewwze resulting temperature cd/wrh ls+whzg8cyc/ 5x-e k;6hange?
A. $80 \; ^{\circ}C$
B. $40 \; ^{\circ}C$
C. $20 \; ^{\circ}C$
D. $0.05 \; ^{\circ}C$
