Question: 2 : given the following code; always @ ( posedge clk of negedge nrst ) if ( ! nrst ) a = 0 ; else

2: given the following code;
always @(posedge clk of negedge nrst)
if (!nrst ) a =0;
else if (b) a <=0;
else a = c ;
select all which are true:
A This is not synthesizable
B This is not good practice but is synthesizable
C The code is fine and is synthesizable
D The code needs to include a default value for a

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