【单选题】

Following a year of fast development, by the first quarter of this year, China has had about 1,100 e-commerce websites .
A．China had about 1,100 e-commerce websites by the end of last March

B．by the end of the first quarter of this year, China has had about 1,100 e-commerce websites
C．by the end of this recent past March, China has about 1,100 e-commerce websites
D．by the end of this first quarter, China had about 1,100 or so e-commerce websites