If 10, 12 and ‘x’ are sides of an acute angled triangle, how many integer values of ‘x’ are possible?

[BTGmoderatorDC]

If 10, 12 and ‘x’ are sides of an acute angled triangle, how many integer values of ‘x’ are possible?

(A) 7
(B) 12
(C) 9
(D) 13
(E) 11


OA C

Source: Veritas Prep