A car running with a velocity of $$30\ \text{m/s}$$ reaches midway between two vertical parallel walls separated by $$360\ \text{m}$$, when the driver sounds the horn for a moment. Speed of sound in air is $$330\ \text{m/s}$$. After blowing horn, the first three echoes will be heard by the driver respectively at

A

$$1.2\ \text{s},\ 2.4\ \text{s},\ 3.0\ \text{s}$$

B

$$1.0\ \text{s},\ 2.4\ \text{s},\ 3.0\ \text{s}$$

C

$$1.0\ \text{s},\ 2.0\ \text{s},\ 3.0\ \text{s}$$

D

$$1.2\ \text{s},\ 2.4\ \text{s},\ 3.6\ \text{s}$$