Data Sufficiency

In TRIANGLE PQR, if PQ = x, QR = x + 2, and PR = y, which of
the three angles of TRIANGLE PQR has the greatest degree
measure?
(1) y = x + 3
(2) x = 2

Og answer is a. i don't understand how this is as there are many values to be placed in for the value of x and y. i know the third side rule comes into play here but if the question yields answers that are not possible to use due to the third side rule, can we still use the statement?

1) y= x+3
x=1
y=4

pq = 1
qr = 3
pr = 4

cant use!

x=2
y=5

pq=2
qr=4
pr=5

can use!

thanks!