The marks (out of 8) of two sections in a weekly quiz are given below.
Section A:
Score 4 5 6 7 8
Frequency 3 7 12 5 3
Section B:
Score 4 5 6 7 8
Frequency 2 8 10 7 3
Which section has the higher mean score?
(a) Both sections have equal mean
(b) Section A
(c) Section B
(d) Cannot be determined from the given data