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