The Employee table has the following columns:

$$ EmployeeID$-$positive integer, primary key, auto$-$increment

$$ FirstName$-$variable$-$length string

$$ LastName$-$variable$-$length string

$$ Salary decimal

$$ ManagerID$-$ integer

The following data needs to be added to the Employee table:

FirstName LastName Salary

ManagerlD

Robert

Brown

$150000\mathrm{.}50$

$<$ no value $>$

Write a SQL statement to insert the indicated data into the Employee table.