An anti-cyclone
1. is an intense low pressure system.
2. has winds blowing clockwise in the southern hemisphere.
3. is accompanied by clear and settled weather conditions.
4. is more extensive, slower-moving and more persistent than a depression.
(a) 1, 2 and 4 (b) 2, 3 and 4 (c) 3 and 4 (d) 1 and 2