Question regarding timing of Investment appraisal

CBS Co
CBS Co is considering a new investment which would start immediately and last four years. The company has gathered the following information:

Asset cost – $160,000

Annual sales are expected to be 30,000 units in Years 1 and 2 and will then fall by 5,000 units per year in both Years 3 and 4. The selling price in first-year terms is expected to be $4.40 per unit and this is then expected to inflate by 3% per annum. The variable costs are expected to be $0.70 per unit in current terms and the incremental fixed costs in the first year are expected to be $0.30 per unit in current terms. Both of these costs are expected to inflate at 5% per annum.

The asset is expected to have a residual value (RV) of $40,000 in money terms.

The project will require working capital investment equal to 10% of the expected sales revenue. This investment must be in place at the start of each year.

Corporation tax is 30% per annum and is paid one year in arrears. 25% reducing balance writing-down allowances are available on the asset cost.

General inflation is 4% and the real cost of capital is 7.7%
$12,000 has already been spent on initial research.

Required: Calculate the NPV of the proposed investment.

In this question from technical article
https://www.accaglobal.com/gb/en/student/exam-support-resources/fundamentals-exams-study-resources/f9/technical-articles/advanced-investment-appraisal.html

the project is to be started immediately, which led me to believe that the project would start at times 0 hence It messed up all of my calculations. So when they say immediately are we to assume that it means after 1 year i.e T1 and not T0 because I costed the revenue and costs at T0. or is this question an exception, because I found the wording very confusing.
Thanks in advance