For Tesla, the Model S represents a $\_\_\_\_\_\_\_$ on the Boston Consulting Group $($BCG$)$ market growth$/$market share matrix.

a$.$ cash cow

b$.$ problem child

c$.$ dog

d$.$ star

e$.$ question mark

For Tesla, the Model $3$ represents a $\_\_\_\_\_\_\_$ on the Boston Consulting Group $($BCG$)$ market growth$/$market share matrix.

a$.$ star

b$.$ dog

c$.$ cat

d$.$ cash cow

e$.$ question mark

For Tesla, the Model X SUV represents a $\_\_\_\_\_\_\_$ on the Boston Consulting Group $($BCG$)$ market growth$/$market share matrix.

a$.$ cash cow

b$.$ question mark

c$.$ dog

d$.$ bomb

e$.$ star