How can I get all elements from drop down list in Selenium WebDriver?

Question

How can I get all elements from a drop down list? I used the code below:

List elements = driver.findElements(By.id(\"s\"));

Answer 1

String [] ex = {"A","b","c","d"};

List Str  = driver.findElements(By.xpath("//*[@id=\"institutionName\"]/option"));

for (int i = 0; i < ex.length; i++) {
    System.out.println(Str.get(i).getText());  
    Assert.assertEquals(ex[i], Str.get(i).getText());
}