The correct answer is C. Current asset.
A bill receivable is a written promise to pay a certain amount of money on a specific date. It is a current asset because it is expected to be converted into cash within one year.
An intangible fixed asset is an asset that does not have physical substance but has value because of the rights or privileges it conveys. Examples of intangible fixed assets include patents, trademarks, and copyrights.
A tangible fixed asset is an asset that has physical substance and is used in the production of goods or services or for administrative purposes. Examples of tangible fixed assets include land, buildings, and equipment.
An investment is an asset that is held for the purpose of generating income or capital appreciation. Examples of investments include stocks, bonds, and real estate.