When she heard the news, she looked at me _______ surprise.
A:for
B:to
C:at
D:in
(Ⅰ)求圆M的方程;
(Ⅱ)设A(0,t),B(0,t+6)(﹣5≤t≤﹣2),若圆M是△ABC的内切圆,求△ABC的面积S的最大值和最小值.