The correct answer is A.
OBJ-2.4: Phishing is an email-based social engineering attack in which the attacker sends an email from a supposedly reputable source, such as a bank, to try to elicit private information from the victim. Phishing attacks target an indiscriminate large group of random people. The email in this scenario appears to be untargeted since it was sent to both customers and non-customers of this particular bank so it is best classified as phishing. Spear phishing is the fraudulent practice of sending emails from a seemingly known or trusted sender to induce targeted individuals to reveal confidential information. Whaling is an email-based or web-based form of phishing that targets senior executives or wealthy individuals. A brute-force attack consists of an attacker submitting many passwords or passphrases with the hope of eventually guessing correctly.