ABC,which Closed at $151,has Call Options Trading in April,July,and October

ABC,which closed at $151,has call options trading in April,July,and October with the following values:
$$\begin{array} { l l l l c } & & & \text {---- Calls----- } \\\text { Options/Strike } & \text { April } & \text { July } & \text { October } \\\mathrm { ABC } \quad\quad140 & 11 ^ { 1 / 4 } & 11 ^ { 3 / 4 } & 13 \\151\quad\quad\quad 150 & 11 / 2 & 3 & 4 \\151 \quad\quad\quad160 & 3 / 4 & 11 / 2 & 2\end{array}$$ (a)Calculate the intrinsic value of the April 150 call.
(b)Calculate the intrinsic value of the April 140 call.
(c)Should the price of ABC rise to $156,what is the minimum value that the April 150 call should trade at?