Find the limit L (if it exists). If it does not exist, explain why. (If an answer does not exist, enter DNE.) x - 3 lim x+3x²-9 L = O The limit does not exist at x = 3 because the function approaches different values from the left and right side of 3. O The limit does not exist at x = 3 because the function is not continuous at any x value. O The limit does not exist at x = 3 because the function value is undefined at x = 3. O The limit does not exist at x = 3 because the function does not approach f(3) as x approaches 3. O The limit exists at x = 3.