Assertion: `BF_(3)` is weaker lewisi acid than `BC l_(3)`.
Reason: `BF_(3)` is less electron deficient thann `BCl_(3)`.

Options

A. If both (A) and (R) are true and (R) is the correct explanation of (A)
B. if both (A) and (R) are true but (R) is not correct explanation of (A)
C. If (A) is true but (R) is false
D. If (A) is false but (R) is false

Answer

A