If x has been declared an int, which of the following statements is invalid?

If numbers is a two-dimensional array, which of the following would give the number of columns in row r?

a. numbers.length b. numbers.length[r] c. numbers[r].length d. numbers[r].length[r]

?The id selector lets you write rules, give each a name, and then apply that name to any elements you choose.

Answer the following statement true (T) or false (F)