In a survey of 1000 fruit eaters who like to east one fruit among people, mango and grapes; 400 do not like grape, 380 do not like mango and 542 do not like apple, 294 like both mango and apple, 277 like both grape and mango and 120 like both grape and apple
How many people like only grapes.
a. 281
b. 107
c. 216
d. 207
e. 210