US business inventories for November +0.7% vs +0.6% estimate

The US business inventories increased by a greater than expected +0.7% vs +0.6%. This was the largest gain since June 2015.  Was it voluntary into the Christmas season?  

Retail inventories increased by 1% in November.  

Business sales increased by 0.1% in November vs +0.7% previously.  

The inventory to sales ratio increased to 1.38 months vs 1.37 months