What angles should be used when administering a subcutaneous injection, and with which needle should they be used? a. 45 degrees with a 25- to 30-gauge needle b. 90 degrees with a 25- to 30-gauge needle c. 45 degrees with a 18- to 22-gauge needle d. 90 degrees with a 18- to 22-gauge needle e. 30 degrees with a 25- to 30-gauge needle