When 1,000 children were inoculated with a certain vaccine, some developed inflammation at the site of the inoculation and some developed fever. how many of the children developed inflammation but not fever?
(1) 880 children developed neither inflammation nor fever.
(2) 20 children developed fever.
a. statement (1) alone is sufficient, but statement (2) alone is not sufficient.
b. statement (2) alone is sufficient, but statement (1) alone is not sufficient.
c. both statements together are sufficient, but neither statement alone is sufficient.
d. each statement alone is sufficient.
e. statements (1) and (2) together are not sufficient.