Which function gives the correct recursive formula for the sequence?

Question

10, 7, 4, 1, −2, −5

a1 = 10; an = an −1 − 3
a1 = 10; an = an −1 − 3

a1 = −3; an = a10 + 3
a1 = −3; an = a10 + 3

a1 = 10; an = an −1 + 3
a1 = 10; an = an −1 + 3

a1 = −3; an = an −1 +10
a1 = −3; an = an −1 +10

Answer 1

The correct recursive formula for the sequence is:

a1 = 10; an = an - 3