What does the below code print [closed]

Question

What does the below code print?

val AgeDs = ageDs.filter {

ageDs("birthYear")> 1950

}

The birthYear column can also be referenced with this syntax:

val ageDs = ageDs.filter {

$"birthYear" > 1950

}

a)creates ageDS and dataset is empty

b)doesn't create a ageDS

c)Creates ageDS, and datasets contain all ages that are born after 1950

d)Run time error