[单选题]
A 5000-W heater is used to heat water. How long will it take to 4 jfqn,( qstd-y56bletlz,b 5heat 20 kg7on3txlv2 udw u14 ma6 of water from7amtv n6owdu1 3l2xu4 $20 \; ^{\circ}C$ to $100 \; ^{\circ}C$?
A. 2 minutes
B. 12 minutes
C. 22 minutes
D. 32 minutes
