Problem: a clock hangs on the wall of a railway station , 71 ft 9 in long and 10 ft 4 in high . those are the dimension of the wall , not the clock ! while waiting for a train we noticed that the hands of the clock were pointing in opposite directions , and were parallel to one of the diagonals of the wall , what was the exact time ? 
Options: ['a ) 7 : 15', 'b ) 7 : 5', 'c ) 7 : 25', 'd ) 7 : 45', 'e ) 7 : 55']
b