Fundamentals of Electric Circuits(Fifth Edition)

A constant current of 3 A for 4 hours is required to charge an automotive battery.If the terminal voltage is 10 + t/2 V,where t is in hours.
(a) how much charge is transported as a result of the charging?
(b) how much energy is expended?
Can anyone help me with the questions? The detailed answer will be better.Ts

理解句子意思就ok了，意思是说送往xxx的电量不得不收到限制。
即c restricted
而其它的不通啊。
A是weaken变弱，这个不能同supply搭配吧
B是omit遗漏、忽略
D是降低，都不通。

期待看到有用的回答！