Read the following questions and answer as per the direction given below :
(a) Statement I is true; Statement II is true; Statement II is a correct explanation of Statement I.
(b) Statement I is true; Statement II is true; Statement II is not the correct explanation of Statement I.
(c) Statement I is true; Statement II is false.
(d) Statement I is false; Statement II is true.
Statement I : Although PF5, PCl5 and FBr5 are known, the pentahalides of nitrogen have not been observed.
Statement II : Phosphorous has lower electronegativity than nitrogen.