Identify the pattern for the following sequence. Find the next three terms in the sequence.

5, 2, -1, -4, ____, ____, ____,...
a.
Subtract 3; -7, -10, -13
b.
Add 3; -7, -10, -13
c.
Subtract -3; 7, 10, 13
d.
Add 3; 1, 4, 7