Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
|  | geographical region (northern hemisphere, southern hemisphere, equatorial region) |  | season |  | date |  | date |
| --- | --- | --- | --- | --- | --- | --- | --- |
| In the | northern hemisphere | it is | winter | between | winter solstice; December 21 | and | March Equinox; March 20 |
| In the | northern hemisphere | it is | summer | between | summer solstice; June 21; June solstice | and | autumnal equinox; September 23 |
| In the | northern hemisphere | it is | spring | between | March equinox; March 20 | and | June solstice; summer solstice; June 21 |
| In the | northern hemisphere | it is | fall | between | September equinox; autumnal equinox; September 23 | and | December solstice; winter solstice; December 21 |
| In the | southern hemisphere | it is | winter | between | summer solstice; June 21; June solstice | and | autumnal equinox; September 23 |
| In the | southern hemisphere | it is | summer | between | winter solstice; December 21 | and | March Equinox; March 20 |
| In the | southern hemisphere | it is | spring | between | September equinox; autumnal equinox; September 23 | and | December solstice; winter solstice; December 21 |
| In the | southern hemisphere | it is | fall | between | March equinox; March 20 | and | June solstice; summer solstice; June 21 |
| In the | equatorial region | it is | winter | between | year-round | and | year-round |
| In the | equatorial region | it is | summer | between | year-round | and | year-round |
| In the | equatorial region | it is | spring | between | year-round | and | year-round |
| In the | equatorial region | it is | fall | between | year-round | and | year-round |
Question:
When is the beginning of Spring in the northern hemisphere? Select the correct choice to answer the question or fill in the blank.
Choices:
(A) March equinox; March 20
(B) summer solstice; June 21; June solstice
(C) winter solstice; December 21
(D) September equinox; autumnal equinox; September 23
Answer:
(A) March equinox; March 20