If force 𝑭 ⃗=𝟒𝒊 ̂+𝟓𝒋 ̂ and displacement 𝑺 ⃗=𝟑𝒊 ̂+𝟔𝒋 ̂ then the work done is: Answer - 4 x 3

If force 𝑭 ⃗=𝟒𝒊 ̂+𝟓𝒋 ̂ and displacement 𝑺 ⃗=𝟑𝒊 ̂+𝟔𝒋 ̂ then the work done is:
(A) 4 x 3 (B) 5 x 6
(C) 6 x 3 (D) 4 x 6

Answer : (A) 4 x 3