Bullets are one example of a ________ button: click once it's on, click again it's off

The network technician used a port replicator to determine that there was a defective port

Indicate whether the statement is true or false

Which of the following creates the string of the numbers from 1 to 1000 most efficiently?

a. String s; for (int i = 1; i <= 1000; i++) s += i; b. StringBuilder sb = new StringBuilder(10); for (int i = 1; i <= 1000; i++) sb.append(i); String s = new String(sb); c. StringBuilder sb = new StringBuilder(3000); for (int i = 1; i <= 1000; i++) sb.append(i); String s = new String(sb); d. All are equivalently efficient.