GMAT Sentence Correction (SC) | Re: GMAT Club Grammar Book Due to the fact that there are many

Hi,
Can you please specify the source of this? Because, Honestly I did not find any option correct. Most of us have confusion between A and B. Lets come to them one by one -

a) Due to the fact that there are many sensitive equipments and dangerous chemicals

This option is ambiguous because we can not say the whether the intended meaning is -

There are many sensitive equipments and There are dangerous chemicals - if this is the intended meaning then we are fine

or the meaning is
There are many
...

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