\[\Delta ABC\] is right - angled at B. If the measures of \[\angle A\] and \[\angle C\] are in the ratio \[7:5\] then what is the measure of \[\angle C\]?

• A. \[40{}^\circ \]
• B. \[60{}^\circ \]
• C. \[37.5{}^\circ \]
• D. \[70{}^\circ \]