The following question is based on the given data for an examination.
A. Candidates appeared         10500
B. Passed in all the five subjects   5685
C. Passed in three subjects only   1498
D. Passed in two subjects only    1250
E. Passed in one subject only      835
F. Failed in English only            78
G. Failed in Maths only            275
H. Failed in Physics only           149
I. Failed in Chemistry only         147
J. Failed in Biology only           221
How many candidates passed in at least four subjects ?