Coverage B of a dwelling policy will not apply to a detached garage if which of the following is being stored?

Coverage B under a dwelling policy typically provides coverage for other structures on the insured property that are not attached to the main dwelling, such as a detached garage. However, this coverage can be limited or not apply in certain situations.

When considering the situation in which a helium tank used for the insured's business is stored in the detached garage, it falls outside the scope of Coverage B. This is because Coverage B does not extend to structures used for commercial purposes or in conjunction with a business. Storing a helium tank, especially since it is associated with a business and not for personal use, indicates that the garage is being used for a business activity rather than solely for property related to the personal residential occupancy of the insured.

Thus, the presence of the helium tank signifies that the detached garage is utilized for business storage, leading to the conclusion that Coverage B does not apply in this case.