Identify the Invalid Syntax for Java script executor
a) WebDriver driver = new ChromeDriver();
if (driver instanceof JavascriptExecutor) {
((JavascriptExecutor) driver).executeScript("alert('hello world');");
}
b) JavascriptExecutor js = new JavascriptExecutor(driver);
js.executeScript("arguments[0].click();", element);
c) JavascriptExecutor js = (JavascriptExecutor)driver;
js.executeScript("arguments[0].click();", element);