Step 1: Understand the question.
We must find which of the four statements describe the First Five Year Plan, which ran from 1951 to 1956.
Step 2: Recall the plan.
The First Plan was drawn up by the Planning Commission using the Harrod-Domar idea. Its focus was agriculture, irrigation, power and a higher rate of savings.
Step 3: Check statement (A).
Big money went to dams and irrigation in this plan, such as Bhakra Nangal and Hirakud. So (A) is TRUE.
Step 4: Check statement (B).
The plan saw the pattern of land distribution as the main cause of low farm output and stressed land reform. So (B) is TRUE.
Step 5: Check statement (C).
Heavy tariffs on imports to protect industry belong to the Second Plan (1956-61), with its stress on import substitution and heavy industry. So (C) is FALSE for the First Plan.
Step 6: Check statement (D).
The plan sought to push up the rate of savings to raise investment. So (D) is TRUE.
Step 7: Match with the options.
The true set is (A), (B) and (D), which is option 2. Options 1, 3 and 4 include (C), so they are wrong.
Final Answer:
The First Plan fits A, B and D. This is option 2.
\[ \boxed{\text{Option 2: (A), (B) and (D) only}} \]