Assertion:The soil particles particularly clay and organic matter in soil,contain negative charges that attract positively charged ions such as $$Ca^{++}, K^{++}, Mg^{++}$$
Reason: The attraction keeps these ions at a soil level where they are available to plants
(A) Both assertion and reason are true and the reason is a correct explanation of the assertion
(B) Both assertion and reason are true but reason is not a correct explanation of the assertion
(C) Assertion is true but the reason is false
(D) Both assertion and reason are false
