Refer to the Product table. How many rows appear in the query's result table?

A table with $6$ rows and $4$ columns. The first row contains headers ProductId, ProductName, Size, Quantity. The second row contains entries $1,$ Onesies set, $3-6$M$,20.$ The third row contains entries $2,$ Sunsuit, $3-6$M$,10.$ The third row contains entries $3,$ Romper, $9-12$M$,5.$ The fourth row contains entries $4,$ Pajama set, $24$M$,20.$ The fifth row contains entries $5,$ Shorts set, $18$M$,8.$

SELECT DISTINCT Size

FROM Product;