Subsection 20(1) says:
Subject to this section, the head of a government institution shall refuse to disclose any record requested under this Act that contains
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(b) financial, commercial, scientific or technical information that is confidential information supplied to a government institution by a third party and is treated consistently in a confidential manner by the third party;
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(d) information the disclosure of which could reasonably be expected to interfere with contractual or other negotiations of a third party