[单选题]
If 40 kcal of heat is added to 2.0 kg ofyh2ei kmp vh)o*:ap5 1 water, what iscpt +h 57mzmqzo 9rw/(;p en2l the resulting temperature chaner; cqh(l2p+w mpoz 79m5nzt/ ge?
A. $80 \; ^{\circ}C$
B. $40 \; ^{\circ}C$
C. $20 \; ^{\circ}C$
D. $0.05 \; ^{\circ}C$
