Explanation:

About the Northeast monsoon

• Two seasons of rainfall in India: Southwest monsoon (about 75 percent of the country’s annual rainfall) between June and September and the Northeast monsoon during October to December.
• Affected region: Also called the winter monsoon, it is a comparatively small-scale monsoon, which is confined to the Southern peninsula - Tamil Nadu, Puducherry, Karaikal, Yanam, coastal Andhra Pradesh, Kerala, north interior Karnataka, Mahe and Lakshadweep.
• Tamil Nadu records about 48 percent of its annual rainfall during these months.

Mechanism

• Withdrawal of the Southwest monsoon: After this, by mid-October the wind pattern rapidly changes from the south-westerly to the north-easterly direction. 
• Peak time for cyclonic activity: From October to December is the peak time for cyclonic activity in the North Indian Ocean region - covering the Arabian Sea and the Bay of Bengal.
• Low pressure system: The winds associated with the formation of low pressure systems, depressions, or cyclones influence this monsoon, and cause rainfall.

Hence all statements are correct.