There are 16 students in a class. On the day the test was given, Bob was absent. The other 15 students took the test and their average was 77. The next day, Bob took the test, and with this grade included, the new average was 78. What was Bob's grade on the test?	Choose the correct choice from the following answers
A) 92
B) 93
C) 94
D) 95
E) 96
15*77+Bob's grade=16*78   Alice's grade is   16*78-15*77= 
<gadget id="calculator">  16*78-15*77</gadget>
<output>93</output>
93.   The answer is 93.
<result>B</result>
There are 16 students in a class. On the day the test was given, Bob was absent. The other 15 students took the test and their average was 77. The next day, Bob took the test, and with this grade included, the new average was 78. What was Bob's grade on the test?