Which of These Is Not a Recommendation by Gardner for Schools

Which of these is not a recommendation by Gardner for schools?

A) Schools should foster all intelligences.
B) Teachers should capitalise on the strongest intelligences of individual children.
C) Schools should focus on the idea that general intelligence is a single factor, is stable, and will not change due to environmental influences.
D) Instruction should try to engage as many different intelligences as possible to gain a much richer understanding of the topic by all students.