c^2 = a^2 + b^2 - 2 * a *b *cos(Y)
250^2 = 160^2 + 260^2 - 2 *160 * 260 * cos(Y)
62500 = 25600 + 67600 - 83200 * cos(Y)
83200 * cos(Y) = 25600 + 67600 - 62500
83200 * cos(Y) = 30700
cos(Y) = 307/832
Y = arccos(307/832)
Y = 68.35
X = 180 - 68.35
X = 111.65
The answer is B.
